/jem'euh nay"sheuhn/ , n.
1. a doubling; duplication; repetition.
2. Phonet. the doubling of a consonantal sound.
3. Rhet. the immediate repetition of a word, phrase, etc., for rhetorical effect.
[ 1590-1600; gemination- (s. of geminatio ), equiv. to geminat ( us ) (see GEMINATE) + -ion- -ION ]