What does an indicator indicate?

indicator noun. a device for showing the operating condition of some system. 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.

What is the definition of indicator in biology?

Definition of Biological indicator. They are any biological species or group of species whose function, population, or status can reveal the qualitative status of the environment. One example of a group of bio-indicators are the copepods and other small water crustaceans that are present in many water bodies.

What is an indicator definition?

Indicators are clues, signs or markers that measure one aspect of a program and show how close a program is to its desired path and outcomes. Indicators are realistic and measurable criteria of project progress. They should be defined before the project starts, and allow us to monitor or evaluate whether a project does what it said it would do.