iotacism

i·o·ta·cism  (-t-szm)

n.

In Greek, the pronunciation of certain letters, like eta and upsilon, as iota () because of a regular sound change.

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[Late Latin itacismus, from Greek itakismos, from ita, iota; see iota.]

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iotacism

excessive use of the sound i and the substituting of this sound for other vowels. — iotacist, n.

See also: Language