AskDefine | Define indicator

Dictionary Definition



1 a number or ratio (a value on a scale of measurement) derived from a series of observed facts; can reveal relative changes as a function of time [syn: index, index number, indicant]
2 a signal for attracting attention
3 a device for showing the operating condition of some system
4 (chemistry) a substance that changes color to indicate the presence of some ion or substance; can be used to indicate the completion of a chemical reaction or (in medicine) to test for a particular reaction

User Contributed Dictionary



  1. a pointer or index that indicates something
  2. a meter or gauge
  3. the needle or dial on such a meter
  4. any of many substances, such as litmus, used to indicate the concentration of a substance, or the degree of a reaction
  5. a plant or animal whose presence is indicative of some specific environment
  6. a measure, such as unemployment rate, which can be used to predict economic trends
  7. a trafficator

Derived terms


meter or gauge
needle or dial on a meter
indicative animal or plant
economic measure

Extensive Definition

Indicator may mean:
indicator in German: Indikator (Begriffsklärung)
indicator in French: Indicateur
indicator in Dutch: Indicator
indicator in Portuguese: Indicador
indicator in Slovak: Indikátor
indicator in Serbian: Indikator
indicator in Finnish: Indikaattori
indicator in Chinese: 指示剂

Synonyms, Antonyms and Related Words

Fathometer, JP, Justice, arbiter, arbitrator, badge, banner, bencher, bob, character, characteristic, control indicator, count-rate meter, critic, current indicator, density indicator, depth sounder, detonation indicator, device, differentia, display, earmark, echo sounder, fault lamp, flowmeter, galvanometer, gauge, hallmark, his honor, his lordship, his worship, humidity indicator, hygrometer, idiosyncrasy, image, index, indicant, insignia, interferometer, ionization gauge, judge, justice, keynote, lead, liquid-level indicator, load indicator, logger, magistrate, mark, measure, meter, moderator, needle, note, pH meter, peculiarity, picture, plumb, plumb bob, plumb line, plummet, pointer, potentiometer, probe, property, psychometer, pyrometer, referee, representation, representative, seal, sigil, sign, signal, signature, sound, space probe, stamp, sure sign, symptom, telltale sign, thermocouple, time-interval meter, trait, turn indicator, umpire, vibration meter, voltage indicator
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