English dictionary



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English noun: indicator

1. indicator (communication) 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


Synonymsindex, index number, indicant


Broader (hypernym)fact


Narrower (hyponym)BMI, body mass index, business index, leading indicator, price index, price level, short account, stock index, stock market index

2. indicator (communication) a signal for attracting attention


Broader (hypernym)sign, signal, signaling


Narrower (hyponym)point of reference, reference, reference point

3. indicator (artifact) a device for showing the operating condition of some system


Broader (hypernym)device


Narrower (hyponym)annunciator, cursor, dial, fuel gauge, fuel indicator, gnomon, indicator lamp, level, pilot lamp, pilot light, pointer, pointer, scale, spirit level, test paper, tidemark

4. indicator (substance) (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


Broader (hypernym)color, coloring material, colour, colouring material


Narrower (hyponym)absorption indicator, acid-base indicator, alpha-naphthol test, Molisch reaction, Molisch test, Molisch's test, oxidation-reduction indicator


Domain categorychemical science, chemistry









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