D defs.my
Entry 1 sense Webster, 1913

Itacism

· I·ta·cism · IPA
01 n. Pronunciation of η (eta) as the modern Greeks pronounce it, that is, like e in the English word be. This was the pronunciation advocated by…
  1. 1.
    Pronunciation of η (eta) as the modern Greeks pronounce it, that is, like e in the English word be. This was the pronunciation advocated by Reuchlin and his followers, in opposition to the etacism of Erasmus. See Etacism.(Greek Gram.) See: Etacism
    “In all such questions between ε and αι the confusing element of itacism comes in.” — Alford.