English
etacism
From eta + -cism (phenomenon related to a specific phoneme).
Formed from eta + -cism
Ancient Greek ἦτα ‘eta, the name for the seventh letter Η (Ē), η…’
English eta
Today it means
noun The pronunciation of the Ancient Greek η (eta) like the Italian long e, or the vowel in the English word ate.
Language periods are conventional ranges, not dates for this word.
Etymograph / etacism