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indicator

in·di·ca·tor

UK/ˈɪn.dɪˌkeɪ.tə(ɹ)/ US/ˈɪndʌˌkeɪtɜr/ uncommon uk

noun

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

Synonyms
2.

a signal for attracting attention

3.
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

Origin

From Late Latin indicātor (“one who points out”), from Latin indicō (“point out”). By surface analysis, indicate + -or; see indicate.

Phrases

  • acid-base indicator
  • airspeed indicator
  • attitude indicator
  • bank-and-turn indicator
  • bite indicator
  • Burrell indicator
  • chemical indicator
  • coincident indicator

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WordNet 2.1 (Princeton University). Wiktionary (CC BY-SA). CMU Pronouncing Dictionary. WordNet 2.1 Copyright Princeton University. All rights reserved. Wiktionary content is available under the Creative Commons Attribution-ShareAlike Licence.