ETYM Latin os, oris, the mouth, akin to Skr. âs. Related to Adore, Orison, Usher.
(Homonym: aural).
1. Of or relating to or affecting or for use in the mouth.
2. Using speech rather than writing; SYN. unwritten.
3. (Psychoanalysis) A stage in psychosexual development when the child's interest is concentrated in the mouth; fixation at this stage is said to result in dependence, selfishness, and aggression.
4. (Anatomy) Of or involving the mouth or mouth region or the surface on which the mouth is located.

City W Kazakhstan on Ural River

An examination conducted by word of mouth; SYN. oral exam, oral examination, viva voce.