oral

(noun) an examination conducted by spoken communication. Synonyms: oral exam, oral examination, viva voce, viva.

(adj) using speech rather than writing. Synonyms: unwritten. Examples: "An oral tradition." "An oral agreement."

(adj) of or relating to or affecting or for use in the mouth. Examples: "Oral hygiene." "An oral thermometer." "An oral vaccine."

(adj) of or involving the mouth or mouth region or the surface on which the mouth is located. Synonyms: oral (vs. aboral). Examples: "The oral cavity." "The oral mucous membrane." "The oral surface of a starfish."

(adj) 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. Synonyms: oral (vs. anal).