antagonist

antagonist definition - medical

an·tag·o·nist (ăn-tăgˈə-nĭst)

noun
Something, such as a muscle, disease, or physiological process, that neutralizes or impedes the action or effect of another.

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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