Definition of propranolol in English:


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


  • A synthetic compound that acts as a beta blocker and is used mainly in the treatment of cardiac arrhythmia.
    • Chemical formula: C16H21NO2
    More 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.

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