duplicate

to make an exact copy of something: There's a machine that can duplicate nine DVDs at a time. to do something again that has already been done, when this is unnecessary: Some of the proposed laws duplicate those already adopted by the federal government.

to make an exact copy of something: There's a machine that can duplicate nine DVDs at a time. to do something again that has already been done, when this is unnecessary: Some of the proposed laws duplicate those already adopted by the federal government.

a. : either of two things exactly alike and usually produced at the same time or by the same process. b. : an additional copy of something (such as a book or stamp) already in a collection. 2. : one that resembles or corresponds to another : counterpart. 3. : two identical copies used in the phrase in duplicate.

When you use the Remove Duplicates feature, the duplicate data will be permanently deleted. …