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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.
Compare alpha blocker.
Origin of beta blocker
Related forms
beta-blocking, adjective Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the web for beta blocker
  • These drugs are usually used in combination with a diuretic or a beta blocker.
  • Propranolol, a beta blocker drug, has no beneficial effect on the symptoms of hangover.

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