Source : Webster's Revised Unabridged Dictionary (1913)

Gemination \Gem`i*na"tion\, n. [L. geminatio.]
   A doubling; duplication; repetition. [R.] --Boyle.

Source : WordNet®

gemination
     n 1: the doubling of a word or phrase (as for rhetorical effect)
     2: the act of copying or making a duplicate (or duplicates) of
        something; "this kind of duplication is wasteful" [syn: {duplication}]