beta blocker

or be·ta-block·er


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.

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Compare alpha blocker.

Origin of beta blocker

First recorded in 1975–80

OTHER WORDS FROM beta blocker

be·ta-block·ing, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020