English
reduplication
From re- + duplication.
A compound of re- + duplication
Proto-Italic *wre- ‘again’
English re-
Latin duplex ‘double, twofold’
Latin duplicō ‘to double, multiply by two, duplicate’
Late Latin duplicātiō
Middle French duplication
Middle English duplicacioun
English duplication
Today it means
noun The act of, or an instance of, reduplicating.
Language periods are conventional ranges, not dates for this word.
Etymograph / reduplication