Definition of os orbiculare in US English:

os orbiculare

noun

Anatomy Zoology
rare, historical
  • The orbicular bone.

Origin

Late 17th century. From post-classical Latin os orbiculare from classical Latin os + post-classical Latin orbicularis.

Pronunciation

os orbiculare

/ˌɒs ɔːbɪkjʊˈlɑːri/