agonist

Definitions

General Science

  • noun a substance such as a hormone, neurotransmitter or drug that binds to a cell’s receptors to trigger a response

Medical

  • noun a muscle which causes part of the body to move and another muscle to relax when it contracts.
  • noun a substance which produces an observable physiological effect by acting through specific receptors.

Sports

  • noun a muscle whose action is balanced by that of another associated muscle
  • noun a hormone, neurotransmitter or drug that triggers a response by binding to specific cell receptors
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