Definition of heat in English:



mass noun
  • 1The quality of being hot; high temperature.

    ‘the fierce heat of the sun’
    • ‘The building will also be sensitive to sun angles and heat and cold retention.’
    • ‘At least my dress was not welcoming the sun's heat; on the contrary I was comfortable with a slight breeze ruffling my skirts.’
    • ‘Hoses and jets were also used to keep gas canisters from exploding in the fierce heat and to stop the fire from spreading to the marina's petrol station.’
    • ‘In quantitative terms using heat, the temperature at which the animals experienced discomfort was approximately halved.’
    • ‘The iguana, in Wyke, was one of two reptiles discovered in a makeshift vivarium which did not have heat or temperature control.’
    • ‘The heat was so fierce and fumes so thick, Mr Feather was unable to get back into his room to reach his keys and the four became trapped by the locked door separating the pub from the private living area.’
    • ‘Heat pumps work by taking a large amount of low-temperature heat and turning it into a smaller quantity of heat at a higher temperature.’
    • ‘Uncertainty about the correct temperature or what heat was needed led to disaster.’
    • ‘Irrespective of temperature, though more challenged by cold than heat, blood glucose must be maintained.’
    • ‘The heat instantly doubled its temperature, turning the ground within hundreds of feet into lava.’
    • ‘Their accumulation in the air traps heat and raises the temperature.’
    • ‘It will fund a research project involving the design of equipment to measure microwave heat at temperatures of up to 1,500 degrees Celsius.’
    • ‘Two firemen were burned as their equipment melted in the fierce heat, believed to have been as high as 1,200 deg C.’
    • ‘Insulin will remain stable for months at room temperature, but should be protected from extreme heat and freezing cold.’
    • ‘This acts like a huge duvet, trapping heat from the sun and slowly raising the temperature of the Earth's climate.’
    • ‘Storage at average room temperature away from direct heat or direct sunlight is best.’
    • ‘The air became thicker and with haze of heat, the temperature was rising severely and her skin began to moisten with sweat.’
    • ‘Klett added the system can be easily interchanged to enable personnel working in very cold temperatures to get insulated heat.’
    • ‘Afterwards, we de-ice ourselves in the welcome, healing heat of the water.’
    • ‘Local people were braving the fierce heat trying to pull something from the cabin, most probably the driver, who was certainly dead.’
    hotness, warmth, warmness, high temperature
    View synonyms
    1. 1.1Physics Heat seen as a form of energy arising from the random motion of the molecules of bodies, which may be transferred by conduction, convection, or radiation.
      • ‘This is because during the collision the meteor loses part of its kinetic energy as heat radiation.’
      • ‘Our results show that the conductive heat transfer model and the convective plus radiative heat transfer model best represent the data measured.’
      • ‘Clausius interpreted free heat as the kinetic energy of the particles of the body.’
      • ‘Do you suppose that all objects are able to transfer energy as heat equally?’
      • ‘The human body usually emits heat by way of convection and radiation, and in hot weather the body has to dissipate perspiration by transpiration.’
    2. 1.2 Hot weather conditions.
      ‘the oppressive heat was making both men sweat’
      • ‘After breakfast we looked in at the National Parks Centre in Reeth and got some info on our route and a weather forecast of heavy heat with possible thunderstorms and flash floods.’
      • ‘The package has had to contend with sandstorms, muddy conditions and oppressive heat.’
      • ‘Another week of heat and dry conditions will warrant further upgrades to these states, as well as eastern Nebraska.’
      • ‘The course was as usual in superb condition but the oppressive heat drained the strength of the competitors and the scores reflected this.’
      • ‘One week was spent trudging through snow and ice, the other trying to cope with supernaturally oppressive heat and humidity.’
      • ‘Others, mainly women, were just taking the necessities of survival in the sweltering heat: food and water.’
      • ‘He even spent a couple of weeks at a military boot camp to prepare, braving extremes of weather from blistering heat to thunderstorms and a tornado.’
      • ‘In that same vein, you'll be working up a sweat without any effort in the sweltering August heat without air conditioning.’
      • ‘It remains to be seen how much of an impact the extreme heat coupled with dry conditions during the past 30 days will have on corn yields.’
      • ‘They had been packed together without air conditioning in the sweltering heat with nothing to eat nor to drink.’
      • ‘In the Gulf the conditions were bad with heat and the sand storms.’
      • ‘But such was the oppressive humidity and heat of his last event, the Malaysian Open, that Dyson has now wisely decided not to take part in the Qatar event.’
      • ‘Also, adverse weather conditions, such as heat or rain, may compromise walking performance.’
      • ‘Girlfriends will drive through rain, storms, hail, heat and darkness to get to you in a crisis.’
      • ‘Summer's spiritual hardships are manifest through the oppressive summer heat.’
      • ‘Be prepared for more oppressive heat during the next two months as the dry weather will likely continue before entering the transition to the rainy season.’
      • ‘The weatherman says the scorching heat is on its ways back later this week.’
      • ‘It constantly amazes me how so many plants can go into survival mode in extreme heat, toughing out conditions that humans would soon perish in.’
      • ‘Having been used to arid, scorching heat, the brisk weather was both welcome and refreshing, if not a bit cold.’
      • ‘Dolly and I had a grand siesta right through the oppressive heat of the afternoon, waking to find the early evening cooler and more pleasant altogether.’
      hot weather, hotness, warm weather, warmth, warmness, sultriness, closeness, mugginess, humidity, swelter
      View synonyms
    3. 1.3 A source or level of heat for cooking.
      ‘remove from the heat and beat in the butter’
      • ‘Usually, food that was cooked over direct heat from a burning substance, or one that was smoked, could contain carcinogenic material.’
      • ‘Heat the olive oil in a large stock pot over medium heat and add the sausage.’
      • ‘Cooking with cheese works well when using techniques that call for low heat and slow cooking.’
      • ‘Add the parsley, increase the heat and add the wine and the reserved juices from the crab.’
      • ‘In a large skillet or sauté pan, warm the olive oil over high heat, almost to the smoking point.’
      • ‘Place a large skillet over medium heat and add 1 inch of corn oil to the skillet.’
      • ‘Melt the butter in a pan over a very low heat, add the pancetta and cook until golden brown and tender.’
      • ‘Warm the olive oil in a large soup pot over medium-low heat, and add the garlic and rosemary.’
      • ‘Place them in a heavy, dry skillet over moderate heat, stirring frequently, until fragrant.’
      • ‘Because you are applying direct heat, skillet cooking will quickly cook vegetables and even meats such as chicken and beef.’
      • ‘It's true that non-stick cookware manufacturers recommend moderate heat.’
      • ‘Heat the olive oil in a large saucepan over moderate heat.’
      • ‘Longer, gentler heat ensures thorough cooking, while sauces and stuffings help to preserve moisture.’
      • ‘Make a blond roux by melting the butter over medium heat and adding the flour.’
      • ‘Place the pan over medium heat, add the porcini mushrooms, and sauté for one minute.’
      • ‘Add brown rice and oregano, reduce heat to low, cover and simmer 5 minutes.’
      • ‘Boil milk with sugar, saffron, yellow colour and cornflour on low heat, add the egg yolk and boil till the mixture thickens.’
      • ‘Put the saucepan back over low heat, add tahini, pepper and chili powder, and stir to combine.’
      • ‘Add your garlic and fry over medium heat until the garlic just starts to turn brown.’
      • ‘Reduce heat and add the coconut milk a little at a time, stirring continuously until creamy.’
    4. 1.4 A spicy quality in food that produces a burning sensation in the mouth.
      ‘chilli peppers add taste and heat to food’
      • ‘The two sources that appear via Google both suggest it is food noisy with heat.’
      • ‘Plump shrimp empanadas, fried dark as copper, get heat from adobo and sweetness from pineapple.’
      • ‘Too little or too much water in the growing stages can increase pepper heat, while cooler temperatures can decrease it.’
      • ‘The kind and amount of chili peppers you use will determine the chili's heat.’
      • ‘Like calamine lotion on burnt skin, it soothes the blistering heat of the local cooking.’
      • ‘A massoman curry has a much gentler level of heat than a kapao, in case you were wondering.’
      • ‘Plus it made my mouth fluffy in addition to the excruciating heat.’
      • ‘Here it was mixed with what must have been cayenne pepper because there was definite heat to it.’
      • ‘C-fibers convey to the central nervous system sensations of noxious heat and certain inflammatory signals.’
      • ‘Like a hot spicy rain, it falls, it's hot spicy heat melding with the sugary sweet taste.’
    5. 1.5technical The amount of heat that is needed to cause a specific process or is evolved in such a process.
      ‘the heat of formation’
      • ‘Heat will then be absorbed in the process and the heat of solution will be positive.’
    6. 1.6technical count noun A single operation of heating something, especially metal in a furnace.
      ‘about 100 tons is removed in each heat’
      • ‘The weakest part of a weldment is the base metal affected by the heat of welding.’
  • 2Intensity of feeling, especially of anger or excitement.

    ‘conciliation services are designed to take the heat out of disputes’
    • ‘For he had felt a sudden change and then a rush of heat as an incomprehensible anger had flowed through him.’
    • ‘His eyes were almost white with heat, an anger she had never seen.’
    • ‘Maybe Australia are not as good as New Zealand but the intensity and heat was there.’
    • ‘It grants clarity to chaos and provides rational justification for decisions taken in the heat and anger of the moment.’
    • ‘The heat of anger fanned his face as all kinds of unpleasant thoughts filled his head.’
    • ‘Each time we sit still with the restlessness and heat of anger we are tamed and strengthened.’
    • ‘Let's start with their selection policies, the one exercise that usually raises as much heat and excitement as the Lok Sabha polls itself.’
    • ‘Not the same heat of excitement - the novelty already wearing off - but good hard work.’
    • ‘Growing up in a remote and frozen patch of Minnesota, Dylan found heat in the excitement of 50s rock 'n' roll.’
    • ‘The red was a terrible sign, as that indicated heat, generally anger but sometimes some other kind of passion.’
    • ‘The heat and anger brewing between both Blake and Rei was growing rapidly.’
    • ‘Having run from the bus station to Headquarters, she moistened with sweat, but Thurman sweated through shear heat of anger.’
    • ‘I rose from my chair, and I could feel my heat was flushed with anger.’
    • ‘Anger was also a product of innate heat, which excitement and emotion agitated and caused to rise to the surface from the heart.’
    • ‘Erika felt a rush of excitement and heat because she just saw this guy who looked really cute standing next to her.’
    • ‘Jun's eyes never ceased to stray from the ruckus that burned with such intense heat and fury.’
    • ‘Cryel's high emotional walls had barely stood against the battering they had received in the day and now they burned away in the heat of his anger.’
    • ‘I felt the heat of my anger pass and I made myself cool down.’
    • ‘As I edged forward, the embrace became warmer, slowly seeming to pass through my body, increasing in both heat and intensity as it did so.’
    passion, intensity of feeling, ardour, fervour, vehemence, warmth, intensity, animation, earnestness, eagerness, enthusiasm, excitement, agitation
    View synonyms
    1. 2.1the heatinformal Intensive and unwelcome pressure or criticism, especially from the authorities.
      ‘a flurry of legal proceedings turned up the heat in the dispute’
      ‘the heat is on’
      • ‘In a separate development yesterday, Eircom turned up the heat in its attempts to sign up more customers by launching a new introductory package.’
      • ‘After trailing by two at the first break, the Australians turned up the heat and limited Angola to only six points in the second quarter.’
      • ‘Seam bowler Kevin Nash, a gas reader by trade, turned up the heat on the visitors taking 4-46, and the man of the match award.’
      • ‘On Tuesday, the International Monetary Fund turned up the heat on Argentina, saying its economic policy was unsustainable.’
      • ‘Manchester turned up the heat, playing with confidence.’
      • ‘Leeds cruiserweight Denzil Browne has turned up the heat on Jamie Warters by claiming he wants to ‘punish’ the Jorvik Warrior.’
      • ‘The Abbey really turned up the heat in the fourth period and mercilessly ripped their opponents apart, outscoring them 21 points to two.’
      • ‘There's no doubt that the federal authorities have turned up the heat throughout the financial community.’
      • ‘York City today turned up the heat on the local authority over its phased redevelopment plans for Huntington Stadium.’
      • ‘By contrast Lunesdale turned up the heat and netted four times to Ambleside's one to finish winners at 4-2.’
      • ‘Critics of the plan turned up the heat in early March as the House Democratic Caucus passed a resolution criticizing the new structure.’
      • ‘Reporters have turned up the heat on Governor Bush ever since.’
      • ‘The Cheesemen, who lost both last season's encounters with the Reds, turned up the heat with a succession of forward drives close to the Scots' line.’
      • ‘Strangford turned up the heat after the break and three super strikes from mighty Marty Craig saw them race into a 4-1 lead.’
      • ‘The chase for a premium berth in the finals has really turned up the heat in local cricket with all four sides remaining in the hunt, based on last Saturday's play.’
      • ‘As the Magpies turned up the heat, Wilkinson netted again but his effort was disallowed because Emmett's pinpoint cross was deemed to have swerved out of play.’
      • ‘With MacDonald converting for a 14-10 lead, New Zealand turned up the heat.’
      • ‘It proved too much to bear for the young Monaleen side as Nemo turned up the heat and slipped into turbo charge as required to pick off the scores at will.’
      • ‘It will also have turned up the heat on manager Alex McLeish, who is still desperately seeking a left-back and a centre-half.’
      • ‘Former champion Phil Golding turned up the heat on his rivals for the Mauritius Open title by shooting a course record 65 at Belle Mare Plage Links.’
  • 3count noun A preliminary round in a race or contest.

    ‘winners of the regional heats’
    • ‘First round heats are scheduled for this morning and the finals of the three divisions on Sunday afternoon.’
    • ‘He only just made it through to the final after beating Graham Jarvis in two dual lane races in the heats.’
    • ‘Purnell's idea has its roots in kart racing, where heats and finals work very well, and has been well received by Formula One people who do not have vested interests.’
    • ‘He had barely survived his preliminary and semifinal heats.’
    • ‘It sets me up well for the rest of the series and also means I avoid the preliminary heats in the Danish Grand Prix which I am very glad about.’
    • ‘Challenge cup Jet Racing intends to promote competition among racers and allow maximum opportunity to compete in the race heats.’
    • ‘That's 16 riders racing over 20 heats with a first-place run-off if necessary.’
    • ‘There are preliminary heats in the 50m, 100m and 200m distances that lead to semi-finals and then finals, all based on who gains the fastest times.’
    • ‘The Preliminary heats of the Championships will start Wednesday morning as planned.’
    • ‘Players from all but three of Britain's professional clubs will contest heats over 100 metres, followed by a final.’
    • ‘As the 19-year-old raced in the heats he picked up his eighth medal at a single Olympics equalling Russian gymnast Alexsander Dityatin's feat in 1980.’
    • ‘The quiz will be based on a knock-out system system with first and second round heats organised on a regional basis, explained quiz organiser Barry Woods of TCH.’
    • ‘Never go out and run the race, a heat, or a semi-final, and believe that you must save yourself for the final.’
    • ‘The first event for the Sri Lankans was the Men's 400 metres first round heats that were scheduled to be run at 9.45 p.m. Sri Lanka time last night.’
    • ‘The day I visited, the whole village had turned out for a ‘carrera’, a marathon running race with heats for all age groups, which seemed to last all day.’
    • ‘Indeed, the heats of the 10,000 metres were his Olympic debut.’
    • ‘Slim prospects of bigger surf before the weekend, has resulted in the organisers attempting to complete as many of the 16 round two heats as possible yesterday.’
    • ‘German Sandra Voelker set a new women's 50m backstroke world record in the preliminary heats of the national championships in Berlin.’
    • ‘In the quarter-finals, semifinals and final heats four skaters raced head to head.’
    • ‘With time allowing the first two second round heats to also be contested this afternoon, however, he was able to make amends and gained revenge over his wildcard opponent.’
    competition, contest, tournament, round, game, match, fixture, meet, meeting, encounter
    View synonyms


  • 1Make or become hot or warm.

    with object ‘the room faces north and is difficult to heat’
    no object ‘the pipes expand as they heat up’
    • ‘The water passing through the piping cools rooms by absorbing heat during the summer and is warmed to heat the spaces during the winter.’
    • ‘Electromagnetic waves of radio frequency can make molecules vibrate and heat up - like microwaves heat food.’
    • ‘To toast, place the spice mix in a bone dry frying pan and heat it until warm and you can smell the fragrance.’
    • ‘So even if you're contemplating dining on fruit and vegetables, it's better to heat them gently until warm.’
    • ‘Once the engine is warm and has heated up the radiator fluid, which in turn heats the vegetable oil, you can switch the engine to run on straight vegetable oil.’
    • ‘So when the sun shines on the roof it gets warm and heats everything up.’
    • ‘The warm sand heated our sleep sacks, and the sound of the waves lapping on the shore was a comforting sound to my ears.’
    • ‘The warm floor helps heat the building and maintain occupant comfort, even after sunset.’
    • ‘When they were dry they were damped and rolled for the dampness to spread evenly before they were ironed with an iron heated and reheated on the stove.’
    • ‘So far most of the few hundred litres that they've sold have gone to custom paint shops that create designs which reveal themselves when the engine warms up and heats the painted panels, or if the car or motorbike is left in the sun.’
    • ‘The pendant seemed to be getting warmer, heating her neck in a comfortable way.’
    • ‘The trail began early that morning before sunrise; with daylight the warm air heated steamy mist above damp soil.’
    • ‘The sun, his friend for the moment, seemed sullen today, not wishing to warm the straw and heat his limbs in any magnanimous act of good neighbourliness.’
    • ‘The bottom line is that it will cost more to keep warm this winter, whether you heat with natural gas, electricity or home heating oil.’
    • ‘When you visit seniors in their home, a meal ready to heat is always a welcome gift.’
    • ‘She heated warm milk, and then served some smoked haddock she had found on a small china plate.’
    • ‘Warmer temperatures had heated the ice mass, causing dense fog to form.’
    • ‘Spelthorne Borough Council has made the money available on a first come first served basis to help senior citizens in the area make their homes warmer and cheaper to heat.’
    • ‘The simplest explanation is that greenhouse warming heated the surface and atmosphere sufficiently.’
    • ‘As land or ocean water warms, it heats the air next to it and this air begins rising.’
    warm, warm up, heat up, make hot, make warm, raise something's temperature, take the chill off
    become hot, become warm, grow hot, grow warm, become hotter, become warmer, get hotter, get warmer, increase in temperature, rise in temperature
    View synonyms
    1. 1.1heat upno object (of a person) become excited or impassioned.
      ‘he seemed to calm down as quickly as he had heated up’
      • ‘As I kept hitting shots and began to heat up, the Celtics tried to mix it up a little.’
      • ‘But she heated up substantially when discussing the performance of then-newcomer Steve Buscemi.’
      • ‘Kelsey Thu began to heat up on the field as she was shooting the ball exceptionally well early on in the game.’
      • ‘Luckily for the Spartans, he heated up just in time.’
    2. 1.2heat upno object Become more intense and exciting.
      ‘the action really begins to heat up’
      • ‘Despite the icy cold introduction to the New Year, football fever is beginning to heat up once again.’
      • ‘Work just heated up again and will be boiling away for another week at least; I will try to post quite a bit but email will fall by the wayside.’
      • ‘Powerboat races were also held, heating up the action on the water much to the excitement of spectators.’
      • ‘Meanwhile, comment and letters pages all over Quebec began to heat up with the whole gamut of opinions.’
      • ‘However, this is annoyingly located in the bottom left-hand corner, which makes the device tricky to grip as the action heats up, and will cause swift thumb-ache for those with man-sized digits.’
      • ‘The spam wars are heating up in state courts, and may soon boil over into the federal circuit.’
      • ‘The White House surveillance scandal heats up.’
      • ‘As with almost every September in Bulgaria, sporting life has begun to heat up.’
      • ‘It isn't until the fifth track, The Coming Of Spring, that things really begin to heat up.’
      • ‘Yet at the same time, domestic demand is coming off the boil, after being heated up by steep tax cuts and super-low interest rates.’
      • ‘And since most of his donors have not yet contributed the $2,000 legal maximum, they can likely give and give again as the primary campaign heats up.’
      • ‘The kinetic world of dance heats up April 20-21 with Torontonian Kathleen Rea's raw exploration of movement Dressed in White.’
      • ‘Around 1 a.m., after a few drinks, the discussion heats up.’
      • ‘Ms July will warm up your Aussie winter or heat up your northern hemisphere summer.’
      • ‘Things, of course, begin to heat up when two girls move in next door.’
      • ‘As government funding dwindles and the competition for charitable donations heats up, several facilities have turned to corporations and exchanged naming rights for cash.’
      • ‘With the championship only around the corner, things are beginning to heat up.’
      • ‘When the lunch rush really heats up, three cooks slam out plates of homemade pasta from the exposed grill at the back, while joking with servers and shouting greetings to regular customers.’
      • ‘Both foreign and local lenders are going online as the battle for the e-banking market heats up between domestic and foreign banks following China's WTO entry.’
      • ‘The war of words heats up on the campaign trail as the military records of U.S. presidential candidates takes center stage and both candidates talk tough on national security.’
      become impassioned, become excited, become animated, grow passionate, grow vehement
      View synonyms
    3. 1.3archaic with object Inflame; excite.
      ‘this discourse had heated them’
      become impassioned, become excited, become animated, grow passionate, grow vehement
      View synonyms


  • if you can't stand the heat, get out of the kitchen

    • proverb If you can't deal with the pressures and difficulties of a situation, you should leave others to deal with it rather than complaining.

      • ‘Judging by what seems to be a universally sun burnt, heat zapped spirit, it seemed as though dinner plans for the weekend were something along the lines of if you can't stand the heat, get out of the kitchen and into an air-conditioned restaurant.’
      • ‘As they say, if you can't stand the heat, get out of the kitchen, and Peter did just that, going into hotel business school in his native Heidelberg.’
      • ‘Faith can move mountains but if you can't stand the heat, get out of the kitchen, because right now we're in trouble with a capital ‘T’.’
  • in the heat of the moment

    • While temporarily angry, excited, or engrossed, and without stopping for thought.

      ‘things said in the heat of the moment’
      • ‘However, one man did say that some locals were concerned that such a thing could have happened in the area even it had been done in the heat of the moment.’
      • ‘He might add that things happen in the heat of the moment but - and the ‘but’ is crucial - they cannot therefore be justified.’
      • ‘Given that there are not too many really competent referees on the rounds, it should be natural that a player not be judged alone on the instant opinion of an official in the heat of the moment.’
      • ‘I am hoping that the prime minister - maybe in the heat of the moment - said something that he did not intend to.’
      • ‘One thing is certain, rugby will always be a very tough game, in which injuries can be expected, and in most cases there is very little a referee can do to prevent many of them in the heat of the moment.’
      • ‘As a young lad trying to make his way in the game, Matt would have been desperate to impress Mark Hughes and his backroom staff and maybe he got a little bit carried away with himself in the heat of the moment.’
      • ‘Sadly at this moment all that was found in the heat of the moment, was two angry faces, two rapidly beating hearts and one truth.’
      • ‘Of course, you should write about how you're feeling, but not in the heat of the moment when something/someone has really annoyed you.’
      • ‘I've said things in the heat of the moment but you can't honestly have executives talking up share prices just to get a short-term result.’
      • ‘Prosecutor David McGonigal said that when Nagy was arrested he admitted he may have told her in the heat of the moment that he was going to kill her but denied he would have carried out the threat.’
      • ‘That had been all too short, and the ones the night before that had been frenzied, excited ones caught in the heat of the moment.’
      • ‘My theory: in the heat of the moment, Gemma became too flustered to concentrate on the sound coming through her earpiece, and so panicked and chose the wrong key.’
      • ‘Are we truly ready to sacrifice our own harmony, present and future, because, in the heat of the moment, we are unwilling to admit to or listen to an opposing view?’
      • ‘Offering such information takes away moral issues and obligations, even if uttered under the influence and in the heat of the moment.’
      • ‘Instead, though, I'll hang on to it, and use it as a warning to myself every time I'm on the verge of writing something in the heat of the moment.’
      • ‘The Irish recognised that this was said in the heat of the moment and accepted the apology which came via the Scottish Rugby Union.’
      • ‘‘Sometimes you can say things in the heat of the moment that you regret, so he decided to go home,’ said Terry Gibson, his assistant.’
      • ‘‘I think there's nothing more dangerous than adopting legislation in the heat of the moment,’ he says.’
      • ‘‘We always say things in the heat of the moment that we'd have preferred not to have said, and that was one of them,’ he replied.’
      • ‘Householders who kill burglars in the heat of the moment will not face prosecution, the Director of Public Prosecutions pledged yesterday.’
  • on heat

    • (of a female mammal) in the receptive period of the sexual cycle; in oestrus.

      ‘the female is only on heat for a few days’
      • ‘In the animal world, pheromones attract members of the opposite sex irresistibly when the animal is in heat.’
      • ‘Recently the number of incidents increased with the two female dogs on heat.’
      • ‘She wasn't even angry - alright, just a bit - that Nicki rushed off like a dog in heat.’
      • ‘Think of a female dog in heat attracting all those barking mate dogs in the neighborhood.’
      • ‘As the follicle grows, the estrogen eventually reaches a threshold level that causes the cow to be in heat.’
      • ‘The first male member of a pride that reaches a female in heat has the mating priority over her.’
      • ‘He could smell the equine scents, and he drank them in, glad they were what they were, and not the scents of a female dog in heat.’
      • ‘Male cats also may mark in response to the presence of a female cat in heat.’
      • ‘A female on heat may mate with several males.’
      • ‘But she was not here to behave like a bitch in heat, nor like a silly love struck girl.’
      • ‘Female cats can howl overnight when in heat while male cats urinate around the home to mark their domain.’
      • ‘A neighborhood female dog may be in heat, for example, arousing tensions in dogs of both sexes.’
      • ‘This had also happened a few years earlier when the donkey, which was a jack, was more interested in a braying jenny on heat and refused to go anywhere except towards her.’
      • ‘Purring like a cat in heat, Boyle could make a reptile's blood boil to 400 degrees.’
      • ‘On the current single ‘Date With The Night’ she rips up the town like a female Godzilla on heat.’
      • ‘Female pandas typically begin to go on heat at about the age four or five, giving males or eager doctors just one chance to get them in a family way each year.’
      • ‘This woman flashes around some cleavage and Harry follows like a dog in heat.’
      • ‘I was like a lioness in heat, prowling toward anyone who caught my fancy.’
      • ‘Dairy goats are usually bred in the fall; however, they may be in heat any time from August to January.’
      • ‘To become a harem stallion, a male had to abduct fillies in heat one at a time from their father's herds.’


Old English hǣtu (noun), hǣtan (verb), of Germanic origin; related to Dutch hitte (noun) and German heizen (verb), also to hot.