Definition of oto- in English:

oto-

Syllabification: oto-

combining form

(Used chiefly in medical terms) of or relating to the ears: otoscope

Origin

from Greek ous, ōt- 'ear'.

Definition of oto- in:

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Word of the day antebellum
Pronunciation: ˌantɪˈbɛləm
adjective
occurring or existing before a particular war…