(|)rēˌd(y)üpləˈkāshən, rə̇ˌ- noun
Etymology: Late Latin reduplication-, reduplicatio, from reduplicatus + Latin -ion-, -io -ion
1. : an act or instance of doubling or reiterating : duplication , replica
2.
a. : repetition of a radical element or a part of it occurring usually at the beginning of a word, often accompanied by change of the radical vowel, found in many languages, and in some Indo-European languages being grammatically functional especially in the formation of the perfect and present tenses (as in Sanskrit dadāmi “I give”, Sanskrit dadarśe “I have seen”, Latin poposci “I have demanded”, Gothic lailot “I have let”)
b.
(1) : a word or form produced by reduplication
(2) : the repeated element in such a word or form (as po- in Latin poposci )
3. : anadiplosis