Definition of orinasal in US English:

orinasal

adjective

rare
  • Of, relating to, or connecting the mouth and the nose; (Phonetics) pronounced with the oral and nasal passages open.

Origin

Mid 19th century; earliest use found in Proceedings of the Royal Society of London. From classical Latin ōri-, combining form of ōr-, ōs mouth + nasal.

Pronunciation

orinasal

/ˌɔːrɪˈneɪzl/