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

Based on WordNet 3.0 copyright © Princeton University.
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