D defs.my
Entry 1 sense Webster, 1913

Iotacism

/(ī̇*ō"tȧ*sĭz'm)/ · I·o·ta·cism · IPA
01 n. The frequent use of the sound of iota (that of English e in be), as among the modern Greeks; also, confusion from sounding ε, ι, η, υ, ει, …
  1. 1.
    The frequent use of the sound of iota (that of English e in be), as among the modern Greeks; also, confusion from sounding ε, ι, η, υ, ει, etc., like ι.