Antagonist - Dictionary Definition and Overview

Antagonist :  (noun)
1: someone who offers opposition [syn: adversary, opponent, opposer, resister] [ant: agonist]
2: a muscle that relaxes while another contracts; "when bending the elbow the triceps are the antagonist"
3: a drug that neutralizes or counteracts the effects of another drug [ant: synergist]

Based on WordNet 2.0

Antagonist : \An*tag"o*nist\, a. Antagonistic; opposing; counteracting; as, antagonist schools of philosophy.

Based on Webster's Revised Unabridged Dictionary

Antagonist : \An*tag"o*nist\, n. [L. antagonista, Gr. ?; ? against _ ? combatant, champion, fr. ?: cf. F. antagoniste. See Antagonism.] 1. One who contends with another, especially in combat; an adversary; an opponent.

Antagonist of Heaven's Almigthy King. --Milton.

Our antagonists in these controversies. --Hooker.

2. (Anat.) A muscle which acts in opposition to another; as a flexor, which bends a part, is the antagonist of an extensor, which extends it.

3. (Med.) A medicine which opposes the action of another medicine or of a poison when absorbed into the blood or tissues.

Syn: Adversary; enemy; opponent; toe; competitor. See Adversary.

Based on Webster's Revised Unabridged Dictionary

Antagonist :  Antagonist: In biochemistry, an antagonist acts against and blocks an action. For example, insulin lowers the level of glucose (sugar) in the blood, whereas another hormone called glucagon raises it; therefore, insulin and glucagon are antagonists.

An antagonist is the opposite of an agonist which stimulates an action. Antagonists and agonists are key players in pharmacology and in the chemistry of the human body.



Based on Webster's Revised Unabridged Dictionary (1913)

Example Usage of Antagonist

usclinicaltrial: purpose of this stdy is 2 determine efficacy & safety of systemic hedgehog pathway Antagonist in ppl w/ basal cell http://bit.ly/5ThNsO
Trytweetingthis: My cat; the Antagonist. My dog; the companion.
JCTheGreatness: I realize my words n actions paint diff portraits so learn my language n read between the lines Mr. Carter~Greatness~ The Antagonist~NBA
Copyright 2009 wordIQ.com - Privacy Policy  :: Terms of Use  :: Contact Us  :: About Us