Agonist meaning

ăgə-nĭst
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A contracting muscle that is resisted or counteracted by another muscle, the antagonist.
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One involved in a struggle or competition.
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A substance that can combine with a receptor on a cell to initiate signal transduction.
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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.
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One who takes part in a struggle, as a main character in a drama.
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A muscle whose contraction is counteracted by the movement of another muscle (called the antagonist)
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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)
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A contracting muscle that is resisted or counteracted by another muscle, the antagonist.
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A muscle that actively contracts to produce a desired movement.
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A chemical substance, especially a drug, that can combine with a receptor on a cell to produce a physiologic response.
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Someone involved in a contest or battle (as in an agon).
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The muscle that contracts while the other relaxes.

"when bending the elbow the biceps are the agonist"

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(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"

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Origin of agonist

  • Late Latin agōnista contender from Greek agōnistēs from agōn contest agony

    From American Heritage Dictionary of the English Language, 5th Edition

  • From Ancient Greek ἀγωνιστής (agōnistēs, “combatant, champion”)

    From Wiktionary