- a combining form meaning “ear,” used in the formation of compound words: otology.
Also especially before a vowel, ot-.
Origin of oto-
< Greek ōto-, combining form of oûs ear1
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
before a vowel ot-
- indicating the earotitis; otolith
from Greek ous, ōt- ear