Definition of humidity in English:



  • 1[mass noun] The state or quality of being humid.

    • ‘But getting used to the heat and humidity is taking longer that I expected.’
    • ‘Last night a combination of work colleagues passing off responsibilities and humidity meant that at 2.30 I was awake, fully conscious and alert.’
    • ‘The heart problem began three years ago, she said, when he had a heart attack, but he was also sensitive to humidity as he suffered from pleurisy in his youth.’
    • ‘Of course, keeping beautiful amid the heat and humidity is no easy task, so the Shanghai Star brings you some new and effective ways to help you look your best in the hot weather.’
    • ‘The stuffiness was a result of subterranean humidity.’
    • ‘The humidity dampens the desire to move, motivation of any kind thoroughly drenched by the onslaught of heavy tropical rain.’
    • ‘A second set of symptoms is associated with humidity.’
    • ‘Just how much of an influence will the heat and humidity be?’
    • ‘The city had a foggy appearance from the heat and humidity.’
    • ‘I'm not a big fan of heat or humidity, even though I've lived all my life in Brisbane, and it's even less enjoyable after an overnight flight.’
    • ‘Seems we're two of a kind, Dolly and me, both loving the sunshine and the long, langourous days of summer, and both of us loathing the heat and humidity.’
    • ‘Significantly, he is unconcerned by the expected humidity.’
    • ‘It was no surprise then when I opened the doors of my cottage at the homestay to be confronted by air thick with humidity.’
    • ‘Allergies, humidity and a night plagued by bad dreams have all conspired to lead me to post a repeat here this morning.’
    • ‘They worked on everything from diet and tactics, to playing in heat and humidity and dealing with play-acting opponents or suspect officiating.’
    • ‘The humidity is the thing that bothers me the most though!’
    • ‘This time around, we ventured south to experience the heat and humidity that only Washington, DC can provide.’
    • ‘Given their concerns about long flights and humidity, I think our patients should consider the Mediterranean, which is wondrous in June.’
    • ‘The film's visual art is immersive: I'm not sure that any other Los Angeles movie has better evoked the city's humidity.’
    • ‘Intense heat and humidity, coupled with painful swollen feet which was a side effect of surgery, meant I could complete only four of the gruelling seven days walking.’
    1. 1.1A quantity representing the amount of water vapour in the atmosphere or in a gas.
      ‘the temperature is seventy-seven, the humidity in the low thirties’
      • ‘Water damage and high humidity in walls encourage the growth of molds.’
      • ‘Mold and dust mites thrive at higher humidities.’
      • ‘At low humidities the photobiont cells are contracted but are nearly at full turgor at 96% relative humidity.’
      • ‘These mostly nocturnal or crepuscular animals are excellent water conservers, spending much of their time buried in desert sand, where interstitial humidities are high.’
      • ‘High humidities are necessary for this disease to develop.’
      • ‘Mold can grow almost anywhere there is water damage, high humidity or dampness.’
      • ‘The entire family needs higher humidities, but there are differences.’
      • ‘In these tests, he first stored the plywood samples at normal or high humidities for a month or soaked them in water for 2 hours.’
      • ‘Temperatures rarely top - 22°C, and the average humidity is 85 per cent.’
      • ‘The daytime temperature was often 95 degrees, the average humidity 85 percent.’
      • ‘High temperatures favour chemical erosion, and high humidities and rainfall ensure that abundant water is available for the dissolution process.’
      • ‘Kitchens and bathrooms are natural places for higher humidity because of running water and escaping steam.’
      • ‘The structures that make up a snowflake can then be observed under different temperatures and humidities, including the arms, plates, columns and side branches which make each one unique.’
      • ‘Buildings with high humidity and water infiltration problems are particularly prone to mold growth.’
      • ‘Acrylic paints, like oil paints that are rich in medium, become soft and vulnerable to damage and dirt retention at high temperatures and humidities or brittle and friable at low temperatures.’
      • ‘I suspect that with the low humidity you also found the winds were relatively calm and the temperature a little higher than at other times.’
      • ‘Beijing, in the temperate zone, has a relatively lower humidity than the other two cities.’
      • ‘The airflow inside a forest is greatly reduced and results in higher humidities.’
      • ‘Wind speeds, humidities, and rainfall were not significantly related to mean summer temperature of the region in any 3°C temperature band.’
      • ‘But unlike others, it can do this under similar pressures and humidities faced by everyday phenomena.’
    2. 1.2Atmospheric moisture.
      ‘the humidity should be supplied by regularly spraying the leaves’
      • ‘Such sensors, however, have been plagued by their sensitivity to wet and sweaty fingers, as well as to atmospheric humidity.’
      • ‘Make sure you express that your mirrors will be exposed to moisture and humidity and that they should be sealed.’
      • ‘When the water vapor was carried away by the wind, it increased the global atmospheric humidity.’
      • ‘Sprinklers, rather than flooding, provide the necessary humidity.’
      • ‘Wind, soil type, soil moisture, humidity, snow, and winter sunshine may greatly affect the adaptability of plants.’
      • ‘But too much moisture (from humidity in the air) can make even the smoothest hair frizz.’
      • ‘If the soil is moist but the plant still wilts, mist over the plant lightly to increase humidity.’
      • ‘Plants that like shade also like moisture and humidity, so sit their pots in trays filled with gravel to meet their climatic needs.’
      • ‘It is indigenous to African regions characterized by abundantly distributed rainfall and atmospheric humidity frequently approaching saturation.’
      • ‘Washers, dryers, dishwashers, and water heaters also generate large amounts of heat and humidity.’
      • ‘Misting their stems regularly will also help provide additional humidity which they like.’
      • ‘Mist the plant daily to ensure enough humidity and keep it in a bright but not sunny window.’
      • ‘The pivots provided the necessary moisture and humidity required for this disease to develop.’
      • ‘As the plants need humidity, they should be misted regularly.’
      • ‘These terms are sensitive to air temperature, atmospheric humidity, cloudiness, and wind.’
      • ‘Ventilation or air leaks will also influence moisture and humidity in the greenhouse and on the covers.’
      • ‘Another way to give them some humidity, is to mist them a few times a week.’
      • ‘In the sweet wine areas, on the other hand, humidity is sought in autumn, particularly morning mists which evaporate during the day to encourage the spread of noble rot.’
      • ‘If the rising air has enough humidity, clouds and precipitation form.’
      • ‘Protect products from humidity because moisture can lead to contamination.’
      mugginess, humidness, closeness, sultriness, stickiness, steaminess, airlessness, stuffiness, clamminess
      dampness, damp, dankness, moisture, moistness, wetness, mistiness
      View synonyms


Late Middle English: from Old French humidite or Latin humiditas, from humidus (see humid).