Dictionary & Thesaurus

1.

(noun) the act of duplicating something; "this kind of duplication is wasteful"

Synonyms: duplicating

Related Words: copying, reduplication

2.

(noun) either of two things that correspond to one another exactly; "he made a duplicate for the files"

Synonyms: duplicate

Related Words: backup, computer backup, copy, counterpart, match, mate, similitude, twin