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agonist
| Babylon English | Download this dictionary |
agonist
n.
muscle whose activity is balanced by another related muscle (Anatomy); competitor for a prize (as in ancient Greece); (Biochemistry) substance that initiates a physiological response when it is combined with a receptor; person who is involved in a contest or battle (as in an agon); main character in a work of fiction
| English Wikipedia - The Free Encyclopedia | Download this dictionary |
Agonist
An agonist is a chemical that binds to a receptor and activates the receptor to produce a biological response. Whereas an agonist causes an action, an antagonist blocks the action of the agonist and an inverse agonist causes an action opposite to that of the agonist.
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| WordNet 2.0 | Download this dictionary |
agonist
Noun
1. the principal character in a work of fiction
(synonym) protagonist
(hypernym) fictional character, fictitious character, character
(hyponym) antihero
2. someone involved in a contest or battle (as in an agon)
(antonym) adversary, antagonist, opponent, opposer, resister
(hypernym) contestant
3. a muscle that contracts while another relaxes; "when bending the elbow the biceps are the agonist"
(hypernym) antagonistic muscle
4. (biochemistry) a drug that can combine with a receptor on a cell to produce a physiological reaction
(hypernym) drug
(classification) biochemistry
| Webster's Revised Unabridged Dictionary (1913) | Download this dictionary |
Agonist
(n.)
One who contends for the prize in public games.
One who contends for the prize in public games.
Webster's Revised Unabridged Dictionary (1913), edited by Noah Porter. About
| NCI Dictionary of Cancer Terms | Download this dictionary |
agonist
A drug that triggers an action from a cell or another drug.
A Service of the National Cancer Institute.
