Definition of mimation in US English:

mimation

(also mimmation)

noun

Semitic Grammar
  • The appending of m to the flexional vowels in Semitic languages, especially Akkadian.

Origin

Late 19th century. From Arabic mīm, name of the Arabic letter corresponding to Roman m + -ation, after nunation.

Pronunciation

mimation

/mɪˈmeɪʃn/