tonic

tonic definition - medical

ton·ic (tŏnˈĭk)

adjective
  1. Of or producing tone or tonicity in muscles or tissue.
  2. Characterized by continuous tension or contraction of muscles, as a convulsion or spasm.
  3. Producing or stimulating physical, mental, or emotional vigor.
noun
An agent, such as a medication, that restores or increases body tone.

The American Heritage® Medical Dictionary Copyright © 2009 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

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