名詞 reduplication:

1. repetition of the final words of a sentence or line at the beginning of the next
   同義詞：anadiplosis
2. the syllable added in a reduplicated word form
3. a word formed by or containing a repeated syllable or speech sound (usually at the beginning of the word)
4. the act of repeating over and again (or an instance thereof)
   同義詞：reiteration

re.du.pli.ca.tion

n.（名詞）
The act of reduplicating or the state of being reduplicated.
重復：重復的行為或被重復的狀態(tài)
The product or result of reduplicating.
復制品：復制的產品或結果
Linguistics
【語言學】
A word formed by or containing a reduplicated element.
重疊詞：含有或通過重復成份形成的詞
The added element in a word form that is reduplicated.
重疊部分：一個詞中被重復的附加成份

【引伸】
redu.plica.tive
adj.（形容詞）
redu.plica.tively
adv.（副詞）