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.
Words nearby beta blocker
Compare alpha blocker.
Origin of beta blocker
First recorded in 1975–80
OTHER WORDS FROM beta blockerbe·ta-block·ing, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020