indicator

noun in·di·ca·tor \ ˈin-də-ˌkā-tər \
Updated on: 20 Nov 2017

Definition of indicator

1 : one that indicates: such as
a : an index hand (as on a dial) : pointer
b (1) : gauge 2b, dial 4a
(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
2 a : 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)
b : tracer 4b
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

indicatory

play \in-ˈdi-kə-ˌtȯr-ē\ adjective

Examples of indicator in a Sentence

  1. Economic indicators suggest that prices will go up.

  2. a control panel with various indicator lights

Recent Examples of indicator from the Web

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.

First Known Use of indicator

1666

indicator Synonyms

Synonyms
hand, index, pointer, needle
Related Words
dial, face, gauge (also gage)

INDICATOR Defined for English Language Learners

indicator

noun

Definition of indicator for English Language Learners

  • : 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 Defined for Kids

indicator

noun in·di·ca·tor \ ˈin-də-ˌkā-tər \

Definition of indicator for Students

1 : a sign that shows or suggests the condition or existence of something
2 : a pointer on a dial or scale
3 : 1dial 3, gauge

Medical Dictionary

indicator

noun in·di·ca·tor \ ˈin-də-ˌkāt-ər \

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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