Words at Play : Top 10 Words with Bizarre Meanings
Definition:
excessive or wrong use of the sound of the letter m
About the Word:
Roman grammarians seeking to classify vitia ("errors in language") borrowed this term from the Greek mytakismos (my refers to the letter mu).
The ancients' interest in categorizing errors gave modern speech therapists and linguists a few other terms for speech errors: rhotacism ("defective pronunciation of the letter r"); iotacism ("excessive use of the letter I or iota or a too frequent repetition of its sounds"); and the more familiar lisp ("imperfect pronunciation of the sibilants /s/ and /z/").