acid-base indicator

n.

A substance that indicates the degree of acidity or basicity of a solution through characteristic color changes.
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Science definitions for acid-base indicator

acid-base indicator


A substance, such as litmus paper, that indicates the degree of acidity or basicity of a solution through characteristic color changes.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.