oto-

1.
a combining form meaning “ear,” used in the formation of compound words:
otology.
Also, especially before a vowel, ot-.
Origin
< Greek ōto-, combining form of oûs ear1
British Dictionary definitions for oto-

oto-

combining form
1.
indicating the ear: otitis, otolith
Word Origin
from Greek ous, ōt- ear
oto- in Medicine

oto- or ot-
pref.
Ear: otology.