Beta-blocker Definition
bātə-blŏkər, bē-
beta-blockers
noun
A drug, such as propanolol, that counteracts the excitatory effects of norepinephrine released from sympathetic nerve endings at beta-receptors by chemically blocking those receptors, used primarily to treat angina, hypertension, arrhythmia, and migraine.
American Heritage
Any of a class of drugs used to control heartbeat, relieve angina pectoris, treat hypertension, etc. by blocking the nerve impulses that normally excite the beta receptors.
Webster's New World
A drug that blocks beta-receptors, thus counteracting the excitatory effects of norepinephrine and other beta-agonists released from sympathetic nerve endings. Beta-blockers are used primarily to treat angina, hypertension, arrhythmia, and migraine.
American Heritage Medicine
(pharmacology) A blocking agent, one of a class of drugs used to treat hypertension and control the rate at which the heart beats.
Wiktionary
Synonyms:
- beta-adrenergic blocking agent
- beta-adrenergic blocker
- beta-blocking agent
Other Word Forms of Beta-blocker
Noun
Singular:
beta-blocker
Plural:
beta-blockersOrigin of Beta-blocker
-
From action of drug which blocks beta-adrenergic receptors.
From Wiktionary
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