agonist

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ag·o·nist

 (ăg′ə-nĭst)
n.
1. Physiology A contracting muscle that is resisted or counteracted by another muscle, the antagonist.
2. A substance that can combine with a receptor on a cell to initiate signal transduction.
3. One involved in a struggle or competition.

[Late Latin agōnista, contender, from Greek agōnistēs, from agōn, contest; see agony.]

agonist

(ˈæɡənɪst)
n
1. (Physiology) any muscle that is opposed in action by another muscle. Compare antagonist2
2. a competitor, as in an agon
[C17: from Greek agōn agon]

ag•o•nist

(ˈæg ə nɪst)

n.
1. a person engaged in a contest, conflict, struggle, etc., esp. the protagonist in a literary work.
2. a person who is torn by inner conflict.
3. a contracting muscle whose action is opposed by another muscle. Compare antagonist (def. 3).
4. a chemical substance capable of activating a receptor to induce a full or partial pharmacological response. Compare antagonist (def. 5).
[1620–30; < Late Latin agōnista < Greek agōnistḗs contestant =agṓn agon + -istēs -ist]

ag·o·nist

(ăg′ə-nĭst)
A muscle that actively contracts to produce a desired movement. Compare antagonist.

agonist

one who contends for a prize in public games. — agonistic, agonistical, adj.
See also: Athletics
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.agonist - the principal character in a work of fictionagonist - the principal character in a work of fiction
antihero - a protagonist who lacks the characteristics that would make him a hero (or her a heroine)
2.agonist - someone involved in a contest or battle (as in an agon)agonist - someone involved in a contest or battle (as in an agon)
contestant - a person who participates in competitions
adversary, antagonist, opposer, resister, opponent - someone who offers opposition
3.agonist - a muscle that contracts while another relaxesagonist - a muscle that contracts while another relaxes; "when bending the elbow the biceps are the agonist"
antagonistic muscle - (physiology) a muscle that opposes the action of another; "the biceps and triceps are antagonistic muscles"
4.agonist - (biochemistry) a drug that can combine with a receptor on a cell to produce a physiological reaction
drug - a substance that is used as a medicine or narcotic
biochemistry - the organic chemistry of compounds and processes occurring in organisms; the effort to understand biology within the context of chemistry
Translations
agonista
agonista
References in periodicals archive ?
The Food and Drug Administration has eliminated the boxed warning for risk of asthma-related death from the labels of products containing both an inhaled corticosteroid and a long-acting beta agonist, the agency announced.
today announced positive data from a study comparing a once-daily long-acting muscarinic antagonist (LAMA) and a long-acting beta agonist (LABA) fixed-dose combination, Anoro Ellipta (umeclidinium/vilanterol 62.
According to the study, adding tiotropium bromide to low doses of inhaled corticosteroids is more effective at controlling asthma than doubling inhaled corticosteroids alone, and as effective as adding the long-acting beta agonist salmeterol.
The new product combines the dual action of an inhaled corticosteroid and a long-acting beta agonist (LABA) to improve lung function in asthma sufferers.
That recommendation--to use a long-acting beta agonist (LABA) for "the shortest period of time required to achieve control of asthma symptoms and [to discontinue it], if possible, once asthma control is achieved," then use an asthma controller medication to maintain control--has raised concerns among some asthma treatment experts, who said this could be confusing for clinicians and patients.