antagonist
n. 1. One who acts in opposition. 2. A chemical that reduces or eliminates the action of another chemical or drug. 3. The contraction of a muscle opposing the movement of an intended muscle so as to limit or modify the original movement.
n. 1. One who acts in opposition. 2. A chemical that reduces or eliminates the action of another chemical or drug. 3. The contraction of a muscle opposing the movement of an intended muscle so as to limit or modify the original movement.
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