betablocker

beta blocker

noun Pharmacology.
any of various substances that interfere with the action of the beta receptors: used primarily to reduce the heart rate or force in the prevention, management, or treatment of angina, hypertension, or arrythmias.
Also, beta-blocker.
Compare alpha blocker.


Origin:
1975–80

beta-blocking, adjective
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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WordNet
beta blocker

noun
any of various drugs used in treating hypertension or arrhythmia; decreases force and rate of heart contractions by blocking beta-adrenergic receptors of the autonomic nervous system 
WordNet® 3.0, © 2006 by Princeton University.
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