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propranolol Syllabification: pro·pran·o·lol
Pronunciation: /prōˈpranlˌôl/ /-ˌäl/

Definition of propranolol in English:


A synthetic compound that acts as a beta blocker and is used mainly in the treatment of cardiac arrhythmia.
  • Chemical formula: C16H21NO2
Example sentences
  • The beta blockers, including propranolol, nadolol, atenolol, metoprolol, and timolol, are effective but may cause fatigue, sleep disorders, and decreased exercise tolerance.
  • Drug interactions have been shown to occur with alprazolam, warfarin, theophylline, propranolol, and tricyclic antidepressants.
  • Beta blockers like propranolol or metoprolol also affect sleep.


1960s: from pro(pyl) + pr(op)anol, with the reduplication of -ol.

Definition of propranolol in:
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