Defn: An instrument for examining the condition of the ear.

OTOSCOPEIC
O`to*scope"ic, a.

Defn: Of or pertaining to the otoscope or to otoscopy.

OTOSCOPY
O*tos"co*py, n. (Med.)

Defn: The examination of the ear; the art of using the otoscope.

OTOSTEAL
O*tos"te*al, n. Etym: [Oto- + Gr. (Anat.)

Defn: An auditory ossicle. R. Owen.

OTOZOUM
O`to*zo"um, n. Etym: [NL., fr. Gr. (Paleon.)

Defn: An extinct genus of huge vertebrates, probably dinosaurs, known only from four-toed tracks in Triassic sandstones.

OTTAR
Ot"tar, n.