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/ˈɪndəkˌeɪtər/ Listen

Indicator

noun

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: index, index number, indicant.

A signal for attracting attention.

A device for showing the operating condition of some system.

(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.

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"Indicator" Quotes from Famous Books

... her her eye caught the jumping indicator, and she smiled a grim smile. "Faith, in two-shilling jumps like that I'll be bankrupt afore I've my hand on the tails of that coat." And with a tired little sigh she leaned back in the corner, closed her eyes, and relaxed her grip on ...

— Seven Miles to Arden • Ruth Sawyer

... said that the voice was nearer the soul than any other expressive part of us. It is certainly a very striking indicator of the state of the soul. If we accustom ourselves to listen to the voices of those about us we detect more and more clearly various qualities of the man or the woman in the voice, and if we grow sensitive to the strain in our own voices and drop it at once when ...

— Nerves and Common Sense • Annie Payson Call

... glancing at the displayed names. He had almost reached the Clerkenwell end of the Garden when his eye was caught by the name of "Austin Wendover, Dealer in Oriental Stones," gleaming in white letters on the blackboard indicator of a set of offices hived in a building on the corner of a side street. It was the name of the man he was searching for. He turned into the passage, and mounted the ...

— The Hand in the Dark • Arthur J. Rees

... into the sea we should never have known what had destroyed us. She was circling round in the hope of dropping a second one, but we shoved on all speed ahead, crammed down the rudders, and vanished into the side of a roller. I kept the deflection indicator falling until I had put fifty good feet of water between the aeroplane and ourselves, for I knew well how deeply they can see under the surface. However, we soon threw her off our track, and when we came to the surface near ...

— Danger! and Other Stories • Arthur Conan Doyle

... got my arms round the very gentlewoman at this moment.' He lowered the end of the coffin he was holding, wiped his face, and throwing a morsel of rotten wood upon another as an indicator, continued: 'That's her husband there. They was as fair a couple as you should see anywhere round about; and a good-hearted pair likewise. Ay, I can mind it, though I was but a chiel at the time. She fell in love with this young man of hers, and their banns were ...

— A Pair of Blue Eyes • Thomas Hardy

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