English oro-

← Ancient Greek ὄρος (derived)

← Ancient Greek ὄρνῡμῐ (affix)

← Ancient Greek -ος (affix)

← Proto-Indo-European *h₃er- (root)

← Latin ōs (derived)

→ English orad (affix)

→ English orography (affix)

→ English oropharyngoesophageal (affix)

→ English oromaxillofacial (affix)

→ English orofaciodigital (affix)

→ English orotactile (compound)