iotacism
noun
io·ta·cism
ī-ˈōt-ə-ˌsiz-əm 
1
: a speech defect marked by use of the sound \ē\ in place of other vowel sounds
2
: a speech defect marked by inability to correctly pronounce the sound \ē\
Cite this Entry
“Iotacism.” Merriam-Webster.com Medical Dictionary, Merriam-Webster, https://www.merriam-webster.com/medical/iotacism. Accessed 4 Nov. 2025.
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