Definitions for Indicatorˈɪn dɪˌkeɪ tər

This page provides all possible meanings and translations of the word Indicator

Random House Webster's College Dictionary

in•di•ca•torˈɪn dɪˌkeɪ tər(n.)

  1. a person or thing that indicates.

  2. a pointing or directing device, as a pointer on the dial of a measuring instrument.

    Category: Machinery

  3. an instrument that indicates the condition of a machine in operation.

    Category: Machinery

  4. a substance, as litmus, that indicates the presence or concentration of a certain constituent. a substance often used in a titration to indicate the point at which the reaction is complete.

    Category: Chemistry

  5. a plant or animal that indicates by its presence in a given area the existence of certain environmental conditions.

    Category: Ecology

Origin of indicator:

1660–70; < ML

Princeton's WordNet

  1. index, index number, indicant, 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

  2. indicator(noun)

    a signal for attracting attention

  3. indicator(noun)

    a device for showing the operating condition of some system

  4. indicator(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 reaction

Kernerman English Learner's Dictionary

  1. indicator(noun)ˈɪn dɪˌkeɪ tər

    sth that shows the state or condition of sth

    high blood pressure as an indicator of diabetes; economic indicators

  2. indicatorˈɪn dɪˌkeɪ tər

    a needle that points to a number on a piece of equipment

    The indicator was on "empty."

  3. indicatorˈɪn dɪˌkeɪ tər

    turn signal

    Use your indicators.


  1. indicator(Noun)

    A pointer or index that indicates something.

  2. indicator(Noun)

    A meter or gauge.

  3. indicator(Noun)

    The needle or dial on such a meter.

  4. indicator(Noun)

    Any of many substances, such as litmus, used to indicate the concentration of a substance, or the degree of a reaction.

  5. indicator(Noun)

    A plant or animal whose presence is indicative of some specific environment.

  6. indicator(Noun)

    A measure, such as unemployment rate, which can be used to predict economic trends.

  7. indicator(Noun)

    A trafficator.

  8. Origin: From indicator, from indico; see indicate.

Webster Dictionary

  1. Indicator(noun)

    one who, or that which, shows or points out; as, a fare indicator in a street car

  2. Indicator(noun)

    a pressure gauge; a water gauge, as for a steam boiler; an apparatus or instrument for showing the working of a machine or moving part

  3. Indicator(noun)

    an instrument which draws a diagram showing the varying pressure in the cylinder of an engine or pump at every point of the stroke. It consists of a small cylinder communicating with the engine cylinder and fitted with a piston which the varying pressure drives upward more or less against the resistance of a spring. A lever imparts motion to a pencil which traces the diagram on a card wrapped around a vertical drum which is turned back and forth by a string connected with the piston rod of the engine. See Indicator card (below)

  4. Indicator(noun)

    a telltale connected with a hoisting machine, to show, at the surface, the position of the cage in the shaft of a mine, etc

  5. Indicator(noun)

    the part of an instrument by which an effect is indicated, as an index or pointer

  6. Indicator(noun)

    any bird of the genus Indicator and allied genera. See Honey guide, under Honey

  7. Indicator(noun)

    that which indicates the condition of acidity, alkalinity, or the deficiency, excess, or sufficiency of a standard reagent, by causing an appearance, disappearance, or change of color, as in titration or volumetric analysis


  1. Indicator

    In various contexts of science, technology, and manufacturing, an indicator is any of various instruments used to accurately measure small distances and angles, and amplify them to make them more obvious. The name comes from the concept of indicating to the user that which their naked eye cannot discern; such as the presence, or exact quantity, of some small distance. Many indicators have a dial display, in which a needle points to graduations in a circular array around the dial. Such indicators, of which there are several types, therefore are often called dial indicators. Non-dial types of indicators include mechanical devices with cantilevered pointers and electronic devices with digital displays. Indicators may be used to check the variation in tolerance during the inspection process of a machined part, measure the deflection of a beam or ring under laboratory conditions, as well as many other situations where a small measurement needs to be registered or indicated. Dial indicators typically measure ranges from 0.25mm to 300mm, with graduations of 0.001mm to 0.01mm or 0.00005in to 0.001in.

The Standard Electrical Dictionary

  1. Indicator

    (a) An apparatus for indicating the condition of a distant element, such as the water level in a reservoir, the temperature of a drying room or cold storage room or any other datum. They are of the most varied constructions. (b) The receiving instrument in a telegraph system is sometimes thus termed.

Dictionary of Military and Associated Terms

  1. indicator

    In intelligence usage, an item of information which reflects the intention or capability of an adversary to adopt or reject a course of action.

British National Corpus

  1. Nouns Frequency

    Rank popularity for the word 'Indicator' in Nouns Frequency: #1880

Translations for Indicator

Kernerman English Multilingual Dictionary


a pointer, sign, instrument etc which indicates something or gives information about something

the indicator on the petrol gauge of a car.

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