- one who takes part in a struggle, as a main character in a drama
- a muscle whose contraction is counteracted by the movement of another muscle (called the antagonist)
- a substance in the body, or a drug, that acts as a stimulant by binding to a receptor cell, causing a response that may be counteracted by another substance or drug (called the antagonist)
Origin of agonistback-formation ; from antagonist
- Physiology A contracting muscle that is resisted or counteracted by another muscle, the antagonist.
- A drug or other chemical that can combine with a receptor on a cell to produce a physiologic reaction typical of a naturally occurring substance.
- One involved in a struggle or competition.
Origin of agonistLate Latin ag&omacron;nista, contender, from Greek ag&omacron;nist&emacron;s, from ag&omacron;n, contest; see agony.
- Someone involved in a contest or battle (as in an agon).
- The muscle that contracts while the other relaxes.
- "when bending the elbow the biceps are the agonist"
- (biochemistry) A molecule that can combine with a receptor on a cell to produce a physiological reaction.
- "acetylcholine is an agonist at the a cholinergic receptor"
From Ancient Greek ἀγωνιστής (agōnistēs, “combatant, champion”)