INDICATOR • DICCIONARIO INGLES.COM • Definition of Indicator

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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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oxidation-reduction indicator

speed indicator

turn indicator

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"Indicator" Quotes from Famous Books

... is fitted a small propeller. As the water comes in contact with the propeller the sinking motion causes it to revolve. As it revolves it screws down a detonator which comes in contact with the charge at ten, fifteen, twenty, or forty or more feet as designated by the hand of an indicator on the bomb. The hand of this indicator is, of course, set by the officer before the bomb is released either from a gun or from tracks ...

— Our Navy in the War • Lawrence Perry

... solution! is brought into reaction is called !titration!, and the point at which the reaction is exactly completed is called the !end-point!. The !indicator! should show the !end-point! of the !titration!. The volume of the standard solution used then furnishes the measure of the substance to be determined as truly as if that substance ...

— An Introductory Course of Quantitative Chemical Analysis - With Explanatory Notes • Henry P. Talbot

... the nine other millions, it would be found, on distributing this increase among the whole, that on an average six months had been added to the life of each individual. It is with the average length of life, the so-called indicator of average comfort, as with average learning: the level of knowledge does not cease to rise, which by no means alters the fact that there are today in France quite as many barbarians as in the days of Francois I. The charlatans ...

— The Philosophy of Misery • Joseph-Pierre Proudhon

... it's always short-circuited and sparked. He rated it at seventy-five and it's never registered but fifty at its best. He rated the small motor at fifty and it developed thirty—no more. The blue print calls for 1500 revolutions on the big pump and the speed indicator shows 900. Even if the motors were all right, the vibration from that bum foundation that he told you was 'good enough' would throw them out, ...

— The Man from the Bitter Roots • Caroline Lockhart

... better, for insurance examinations, to take the blood pressure of the left arm in right handed persons as a truer indicator of the general condition, the difference is generally not great. The right arm of right handed persons usually registers a full 5 mm. higher systolic pressure ...

— DISTURBANCES OF THE HEART • OLIVER T. OSBORNE, A.M., M.D.

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