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Definition of agonist
1 : one that is engaged in a struggle
2 [from antagonist] a : a muscle that is controlled by the action of an antagonist with which it is pairedb : a chemical substance capable of combining with a specific receptor on a cell and initiating the same reaction or activity typically produced by the binding endogenous substance dopaminergic agonists — compare antagonist 2b
Indulge Your Inner Word Nerd
Origin and Etymology of agonist
Late Latin agonista competitor, from Greek agōnistēs, from agōnizesthai to contend, from agōn
Medical Dictionary
agonist
playMedical Definition of agonist
1: a muscle that on contracting is automatically checked and controlled by the opposing simultaneous contraction of another muscle—called also agonist muscle, prime mover; compare antagonist a, synergist 2
2: a chemical substance (as a drug) capable of combining with a receptor on a cell and initiating the same reaction or activity typically produced by the binding of an endogenous substance binding of adrenergic agonists—compare antagonist b
Learn More about agonist
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Nglish: Translation of agonist for Spanish speakers Britannica.com: Encyclopedia article about agonist
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