1) Duplication 1) Repetition 
In phonetics, gemination or consonant elongation happens when a spoken consonant is pronounced for an audibly longer period of time than a short consonant. Gemination is distinct from stress and may appear independently of it. Gemination literally means `twinning`, and is from the same Latin root as `Gemini`. Consonant length is distinctive in...
doubling of a consonant sound; in rhetoric, repetition of a word or phrase
• (n.) A doubling; duplication; repetition.
Embryologic partial division of a primordium. For example, gemination of a single tooth germ results in two partially or completely separated crowns on a single root. ... Origin: L. Geminatio, a doubling ... (05 Mar 2000) ... 
Gem`i·na'tion noun [ Latin geminatio .] A doubling; duplication; repetition. [ R.] Boyle. 
Type: Term Pronunciation: jem′i-nā′shŭn Definitions: 1. Embryologic partial division of a primordium. For example, gemination of a single tooth germ results in two partially or completely separated crowns on a single root.
[n] - the doubling of a word or phrase (as for rhetorical effect)
noun the doubling of a word or phrase (as for rhetorical effect)
the act of copying or making a duplicate of something