Quantcast
Merriam-Webster Logo
  • Dictionary
  • Thesaurus
  • Scrabble
  • Spanish Central
  • Learner's Dictionary

indicator

play
noun in·di·ca·tor \ˈin-də-ˌkā-tər\

Simple 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

Source: Merriam-Webster's Learner's Dictionary

Full Definition of indicator

  1. 1 :  one that indicates: 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. 2 a :  a substance (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 (as a free acid or alkali) b :  tracer 4b

  3. 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. 4 :  any of a group of statistical values (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



1666

First Known Use of indicator

1666


INDICATOR Defined for Kids

indicator

play
noun in·di·ca·tor \ˈin-də-ˌkā-tər\

Definition of indicator for Students

  1. 1 :  a sign that shows or suggests the condition or existence of something

  2. 2 :  a pointer on a dial or scale

  3. 3 :  1dial 3, gauge




Medical Dictionary

indicator

play
noun in·di·ca·tor \ˈin-də-ˌkāt-ər\

Medical Definition of indicator

  1. :  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>





Seen and Heard

What made you want to look up indicator? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

a very small amount

Get Word of the Day daily email!

WORD GAMES

Take a 3-minute break and test your skills!

alphabet-pasta-spelling-help

Which is the correct spelling?

acommodate acommadate accomodate accommodate
Name That Thing

Test your visual vocabulary with our 10-question challenge!

TAKE THE QUIZ
SCRABBLE® Sprint

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ