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nouna 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
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nouna device for showing the operating condition of some systemtype of:
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nouna signal for attracting attention
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noun(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 reactiontype of:
Synonyms & Similar Words
fact sign level color signal colour device scale dial reference indicate index pointer signaling cursor annunciator index number indicant business index stock market index stock index price index short account price level leading indicator body mass index bmi tidemark test paper pilot light fuel gauge fuel indicator gnomon indicator lamp pilot lamp spirit level reference point point of reference coloring material colouring material alpha-naphthol test molisch reaction molisch's test molisch test acid-base indicator absorption indicator oxidation-reduction indicator