English word oral comes from Proto-Indo-European *h₃ost-, Proto-Indo-European *h₃éh₁os (Mouth.)
| Dictionary entry | Language | Definition |
|---|---|---|
| *h₃ost- | Proto-Indo-European (ine) | bone |
| *h₃éh₁os | Proto-Indo-European (ine) | Mouth. |
| *ōs | Proto-Italic (itc-pro) | |
| or- | Latin (lat) | |
| oralis | New Latin (la-new) | |
| oral | English (en) | (countable) A physical examination of the mouth.. (countable) A spoken test or examination, particularly in a language class.. (uncountable, informal) Oral sex. Relating to the mouth.. Spoken rather than written. |