Share this entry

timolol Syllabification: tim·o·lol
Pronunciation: /ˈtīməˌlôl/ /-ˌläl/

Definition of timolol in English:


A synthetic compound that acts as a beta blocker and is used to treat hypertension, migraines, and glaucoma.
Example sentences
  • The beta-blocker medication timolol may have significant cardiac side effects, including bradycardia and heart failure.
  • The beta blockers, including propranolol, nadolol, atenolol, metoprolol, and timolol, are effective but may cause fatigue, sleep disorders, and decreased exercise tolerance.
  • One researcher found topical use of the betablocker, timolol, did not work as well in the evening.


1970s: from tim- (of unknown origin) + (propran)olol.

Definition of timolol in:

Share this entry


What do you find interesting about this word or phrase?

Comments that don't adhere to our Community Guidelines may be moderated or removed.

Get more from Oxford Dictionaries

Subscribe to remove ads and access premium resources

Word of the day coiffeur
Pronunciation: kwäˈfər
a hairdresser