ˈ ̷ ̷ ̷ ̷ ˈ ̷ ̷ ̷ ̷ noun
: any of a group of drugs (as propranolol) that combine with and block the activity of a beta-receptor so as to decrease the heart rate and force of contractions and to lower high blood pressure and that are used especially to treat hypertension, angina pectoris, and ventricular and supraventricular arrhythmias
• beta-blocking ˈ ̷ ̷ ̷ ̷ ˈ ̷ ̷ ̷ ̷ adjective