Definition of indicator in English:

indicator

noun

  • 1A thing that indicates the state or level of something.

    ‘car ownership is frequently used as an indicator of affluence’
    • ‘A figure above 50 is an indicator of economic expansion and a figure below 50 indicates a contraction of the economy.’
    • ‘The most reliable scale is the Global Severity Index, an indicator of general stress level.’
    • ‘Standardized achievement test scores are also used as an indicator of academic performance.’
    • ‘Educational levels of parents, a standard indicator of social and economic class, differ markedly for younger and older theological students.’
    • ‘They are a poor indicator of the level of district health board output, overall.’
    • ‘Airlines often act as a leading indicator of the general economic environment due to their high sensitivity to interest rates, energy prices and labor costs.’
    • ‘We chose educational level as an indicator of socioeconomic status.’
    • ‘The IQ tests are used in industry and are regarded as being an indicator of future performance in the office or lecture room.’
    • ‘Increases in the consumption of these products is less an indicator of level of development than kind of development.’
    • ‘The results suggest that the frequency of publication of financial statements may be an indicator of economic performance.’
    • ‘Three of the ten indicators that make up the leading index increased in June.’
    • ‘The stock market has long been seen as a leading indicator of economic growth.’
    • ‘Generally speaking, the number of ads is a rough indicator of the economic dynamism of the surveyed country.’
    • ‘A key indicator of the high level of points being issued for the various offences is the fact that more than 7,000 drivers were issued with points last month alone.’
    • ‘Land holding in rural areas is a major indicator of economic status and social position.’
    • ‘Furthermore, the jump in oil prices is reflected in the trade deficit - an indicator of the unsatisfactory level of competitiveness of the Bulgarian economy.’
    • ‘Sperm morphology - its size and shape - is a significant indicator of fertility levels.’
    • ‘The presence of good satire is a fair indicator of the level of free speech you have.’
    • ‘As many have noted, the state of a country's prisons is a telling indicator of its level of civilization.’
    • ‘So the unemployment rate is a leading indicator of both economic and political strength.’
    measure, gauge, barometer, index, mark, sign, signal
    View synonyms
    1. 1.1 An animal or plant species that can be used to infer conditions in a particular habitat.
      ‘the raccoon is a poor choice as an indicator of riparian habitat’
      • ‘‘They are important indicator species,’ he says.’
      • ‘The minnow is an indicator species that suggests the overall health, or sickness, of the entire river ecosystem.’
      • ‘Marine predators are in general decline worldwide and this is what makes seals such a key indicator species.’
      • ‘The plant associates are common widespread wetland species in the southeastern United States, and none were determined to be indicator species.’
      • ‘Now it and various other indicator species are probably doomed.’
      • ‘Research indicated the owl is an indicator species whose decline indicates the imperilment of the old-growth forest ecosystem.’
      • ‘We suggest that this tree species should be considered an indicator species with unexplored economic potential.’
      • ‘For this reason, Black-legged Kittiwakes have been proposed as a good indicator species of marine health.’
      • ‘This also involved the villagers taking on the responsibility of monitoring the key indicator species to understand how the regeneration process was taking place.’
      • ‘The calanoid copepod Lucicutia grandis is an indicator species for this habitat.’
      • ‘Decline of river fish is yet another indicator that natural habitats such as wetlands and rivers and the life they sustain are under intense pressure.’
      • ‘They're what botanists would call an indicator species.’
      • ‘‘The pygmy hog is an important indicator species, and we need to know why it is disappearing faster than other less sensitive species,’ he said.’
      • ‘The indicator species can either be observed directly on the ground by exploration geochemists or detected indirectly in aerial photographs or satellite images.’
      • ‘We also look at them as indicator species more and more.’
      • ‘Are they an indicator species, a harbinger of global environmental crashes ahead?’
      • ‘Repeat the watering when the indicator plants again wilt.’
      • ‘Relatively high levels of pesticides have been found in some western populations, and Tree Swallows are often used as indicator species for pollutants.’
      • ‘It's a so-called indicator species that lives in the river.’
      • ‘So they are terribly important as kind of indicator species of our environment.’
  • 2usually with modifier A gauge or meter of a specified kind.

    ‘a speed indicator’
    ‘an altitude indicator’
    • ‘He let two minutes go by, using the time indicator display in the view-finder.’
    • ‘My last recollection was noting 120 mp/h on the air speed indicator, then I ploughed into trees.’
    • ‘By far the main thing I liked was the fan speed indicator and fan speed control.’
    • ‘Other flight data, including landing gear position indicators and drag information, indicate that it is unlikely the left landing gear was deployed early.’
    • ‘An auxiliary contact may be added to a circuit breaker that can communicate an alarm condition to an LED indicator or process software.’
    • ‘Warning indicators and gauges told her she'd lost all hydraulics.’
    • ‘Alex watched the screen, with speed and distance indicators relative to the Vision's position displayed at the bottom edge.’
    • ‘Pier head deflections were measured using digital dial indicators attached to a reference beam and connected to the data acquisition system.’
    • ‘The boat also managed to use its emergency position indicator radio beacon.’
    • ‘The ship's speed indicator jumped forward, as did the ship, leaving the dimmer-witted fighters behind.’
    • ‘Surely something as simple as an electronic speed indicator, coupled with a 30 mph zone sign, would have effectively targeted the worst offenders.’
    • ‘During the mounting operation, a sensor reads injection information from an indicator device on the syringe and feeds it to an injector control.’
    • ‘I welcome the introduction of the smiley face speed indicators.’
    • ‘Note that this board doesn't have a standby power indicator LED on it.’
    • ‘If you prefer, you can switch to an artificial horizontal situation indicator screen, or split the screen and have both.’
    • ‘Another idea is to install a traffic speed indicator which flashes when a vehicle is travelling too fast.’
    meter, measuring instrument, measuring device, measure, gauge, dial, display, scale, index
    View synonyms
    1. 2.1British A flashing light or (formerly) other device on a vehicle to show that it is about to change lanes or turn.
      as modifier ‘an indicator light’
      North American term turn signal
      • ‘This cluster would also feature normal orange indicators and white reversing lights but which cannot be seen within the red tail light cluster when not in operation.’
      • ‘And, as with some Asian cars, the indicator and windscreen wipers are reversed, which can cause no end of confusion at first,’
      • ‘In the end, the driver crawled along until he could get into a lay-by using only his indicator light for illumination, and used his own mobile to call the police.’
      • ‘Conventional car lighting has a number of elements - headlamps, indicators, brake lights - in set positions.’
      • ‘The bike had no horn, indicators, no lights, no rear brakes, and hardly any front brakes.’
      • ‘Mirrors, indicator lights, the number-plate and tax disk are easy to remove and replace.’
      • ‘Vehicle Inspectorate mechanics checked each vehicle's lights, indicators, brakes, wheel nuts, steering, tyre pressure and general standard of maintenance.’
      • ‘Clumsy indicator / fog lights upset the purposeful, shark-like nose and bling-bling chrome filler cap allied with red brake callipers also look out of place.’
      • ‘Wander round to the back and the rear light clusters are designed to resemble the iris of an eye, with the sidelights, brake lights and indicators arranged in concentric circles.’
      • ‘The front light, indicators and windshield were also broken.’
      • ‘Teach your child how to spot what drivers are likely to do next, for example, the use of indicators and road signs.’
      • ‘Riders must also wear a helmet, and the scooter will need road tax, insurance, number plates, break lights, indicators and an MOT certificate.’
      • ‘CCTV footage showed the bus was stopped at a traffic stop with its indicator lights flashing.’
      • ‘However, sharp eyes will see the revised front bumper where fog lights replace the indicators, which are now housed in the main headlight fairing.’
      • ‘Most obvious changes are the new rear light assemblies - with brake, reversing and indicator lights arranged neatly within a pair of larger tail-lamp units.’
      • ‘Everything is where you want it to be, except the windscreen wipers, and indicators are on the opposite sides from where they usually are.’
      • ‘The car window was smashed, and the indicator lights were flashing.’
      • ‘The entire light cluster can be a rear light, a brake light or an indicator, and automatically adjusts in intensity and brightness to suit prevailing conditions.’
      • ‘Flashing direction indicators for motor vehicles, which will be legal in this country from Friday, were pioneered in Bradford, where they were fitted to some trolley-buses over a year ago.’
      • ‘The vehicle must also be registered with the DVLA and have lights, brakes and indicators.’
    2. 2.2British A board or screen in a railway station, airport, etc. giving current information.
      as modifier ‘the indicator board’
      • ‘The indicator board next to the executive officer's chair lights up like a Christmas tree.’
      • ‘There was no train anywhere near - nothing even shown on the indicator boards - and yet everyone took it with good grace, and sat patiently.’
      • ‘Back at Liverpool Street, the indicator board appeared not to be showing any platform numbers, but I found the right platform just seconds before the 18.32 pulled out.’
      • ‘The indicators which detail what stations the next train is stopping at still operate on a manual basis at Redfern station.’
      • ‘After a wait, then squeezing onto a crowded train I found myself at Liverpool Street, where the indicator board showed delayed or cancelled notices on every train.’
      • ‘Somebody was so busy looking at the train indicator in the station this morning that they walked into me and kicked my ankle.’
      • ‘Stations are being closed for renovation: indicator boards tell when the next train is due: on one line little flashing lights on a map show where the train now is.’
      • ‘The Chelmsford indicator boards were fixed by this evening, but for the last two days we've had no indicators and no announcements.’
  • 3Chemistry
    A compound that changes colour at a specific pH value or in the presence of a particular substance, and can be used to monitor acidity, alkalinity, or the progress of a reaction.

    ‘the remaining alkali is titrated against standard acid using phenolphthalein as indicator’
    • ‘Trace elements and oxygen isotopes are useful geochemical indicators of the chemistry of the waters from which the chert precipitated.’
    • ‘This absence of correlation should warn against using CO temperature coefficients of chemical shifts as indicators of a hydrogen bond acceptor.’
    • ‘Our fish tank kit came with a chemical indicator, bromothymol blue (BromoBlue).’
    • ‘Various brews can give you color indicators for the presence of double bonds, methyl ketones, aldehydes and the like.’
    • ‘The color change in acid-base indicators is due to a chemical reaction between the indicator and the hydronium ions in the solution.’

Pronunciation

indicator

/ˈɪndɪkeɪtə/