Oto definitions

ō'tō
A member of a Native American people formerly inhabiting eastern Nebraska along the Platte River, with a present-day population living with the Missouri in north-central Oklahoma.
noun
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The Siouan language of the Oto, dialectally related to Iowa.
noun
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Ear.

Otology.

prefix
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Ear.

Otoscope.

affix
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Ear and.

Otolaryngology.

affix
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Ordo Templi Orientis.
initialism
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Ot- + -o-
prefix
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Origin of oto

New Latin from Greek ous ōt- ear ous- in Indo-European roots