Medical Dictionary

orbicularis oris


orbicularis oris

noun \-ˈōr-əs\
plural orbiculares oris

Definition of ORBICULARIS ORIS

:  a muscle made up of several layers of fibers passing in different directions that encircles the mouth and controls most movements of the lips (as compressing, closing, or pursing movements)

Illustration of ORBICULARIS ORIS

March 06, 2015
eolian Hear it
Deposited, produced, or eroded by wind
Take a 3-minute break and test your skills!
How to use a word that (literally) drives some people nuts.
Test your vocab with our fun, fast game
Ailurophobia, and 9 other unusual fears