reduplication

(n) repetition of the final words of a sentence or line at the beginning of the next anadiplosis,
(n) the syllable added in a reduplicated word form
(n) a word formed by or containing a repeated syllable or speech sound (usually at the beginning of the word)
(n) the act of repeating over and again (or an instance thereof) reiteration,

anadiplosis reiteration