LATIN DICTIONARYLexicon Latīnum
noun

mĕtăcismus

Meaning

  1. a frequent repetition of the letter

mĕtăcismus, i, m. for mytacismus, = μυτακισμός, from μῦ,
I. a frequent repetition of the letter M, Mart. Cap. 5, § 514; also the pronunciation of M at the close of a word before a word beginning with a vowel, metacism, Diom. p. 448 P.

Quick answers

What does mĕtăcismus mean in Latin?
mĕtăcismus, a noun, means “a frequent repetition of the letter”.