indicator

noun
in·​di·​ca·​tor | \ ˈin-də-ˌkā-tər How to pronounce indicator (audio) \

Definition of indicator

1 : one that indicates: such as
a : an index hand (as on a dial) : pointer
(2) : an instrument for automatically making a diagram that indicates the pressure in and volume of the working fluid of an engine throughout the cycle
2a : a substance (such as litmus) used to show visually (as by change of color) the condition of a solution with respect to the presence of a particular material (such as a free acid or alkali)
3 : an organism or ecological community so strictly associated with particular environmental conditions that its presence is indicative of the existence of these conditions
4 : any of a group of statistical values (such as level of employment) that taken together give an indication of the health of the economy

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Other Words from indicator

indicatory \ in-​ˈdi-​kə-​ˌtȯr-​ē How to pronounce indicatory (audio) \ adjective

Synonyms for indicator

Synonyms

hand, index, needle, pointer

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Examples of indicator in a Sentence

Economic indicators suggest that prices will go up. a control panel with various indicator lights

Recent Examples on the Web

Sage grouse are chicken-sized, ground-dwelling birds considered an indicator species for the health of vast sagebrush landscapes in the U.S. West that support some 350 species of wildlife. Washington Post, "Forest Service to change sage grouse protections in 5 states," 2 Aug. 2019 Sage grouse are chicken-sized, ground-dwelling birds considered an indicator species for the health of vast sagebrush landscapes in the U.S. West that support some 350 species of wildlife. Keith Ridler, The Denver Post, "Forest Service to change sage grouse protections in Colorado, four other western states," 1 Aug. 2019 For example, a drop in customer payments at a retailer’s flagship store might be an early indicator that the company’s prospects -- and its ability to repay debt -- are deteriorating. Fortune, "Jack Ma’s Online Bank Is Leading a Quiet Revolution in Chinese Lending," 29 July 2019 The five-year average in lake visibility — widely considered an indicator of the Lake Tahoe basin’s environmental health — is now 70.3 feet, an increase of almost a foot from the previous five-year average. Paul Rogers, The Mercury News, "Lake Tahoe fills to the top as massive winter snows melt," 12 July 2019 Researchers measured hair cortisol levels (an indicator of chronic stress) in dog-human dyads and found a strong degree of interspecies synchronization. Daphne Miller, chicagotribune.com, "A new meaning for ‘sick as a dog’? Your pet’s health may tell you something about your own," 11 July 2019 The yellow mist rising from the trees looks like an indicator of a rapidly changing environment, which is leaving its mark on human health, local forests and the tideline. The Economist, "Alaska’s changing climate," 4 July 2019 These bugs are more tolerant of toxins and different water qualities, and are less of an indicator of the lake’s health. Mary Kilpatrick, cleveland.com, "Take note, Clevelanders. Mayflies begin to emerge from Lake Erie," 18 June 2019 Yet the outcome of Mr. Vandemoer’s case seemed an imperfect indicator of how cases against others may play out. New York Times, "Stanford Coach Avoids Prison in Admissions Scandal. Have Colleges Avoided Blame?," 12 June 2019

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'indicator.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of indicator

1666, in the meaning defined at sense 1

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More Definitions for indicator

indicator

noun

English Language Learners Definition of indicator

: a sign that shows the condition or existence of something
: a pointer or light that shows the state or condition of something
: a device that shows a measurement

indicator

noun
in·​di·​ca·​tor | \ ˈin-də-ˌkā-tər How to pronounce indicator (audio) \

Kids Definition of indicator

1 : a sign that shows or suggests the condition or existence of something
2 : a pointer on a dial or scale

indicator

noun
in·​di·​ca·​tor | \ ˈin-də-ˌkāt-ər How to pronounce indicator (audio) \

Medical Definition of indicator

: a substance (as a dye) used to show visually (as by a change in color) the condition of a solution with respect to the presence of a particular material (as a free acid or alkali) litmus and phenolphthalein are acid-base indicators

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