orbicularis oris

noun

plural orbiculares 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)

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Cite this Entry

“Orbicularis oris.” Merriam-Webster.com Medical Dictionary, Merriam-Webster, https://www.merriam-webster.com/medical/orbicularis%20oris. Accessed 24 Jul. 2024.

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