Definition of orbicularis oris in English:

orbicularis oris

noun

Anatomy
  • A muscle surrounding the mouth and serving to close the lips.

Origin

Mid 18th century. From scientific Latin orbicularis oris from post-classical Latin orbicularis + classical Latin ōris, genitive of ōs mouth.

Pronunciation

orbicularis oris

/ɔːˌbɪkjʊˌlɑːrɪs ˈɒrɪs/