duplicationcheck
nounUK /ˌdjuːplɪˈkeɪʃən tʃek/
US /ˌduːplɪˈkeɪʃən tʃek/
A duplication check is a way to make sure the same thing is not there twice.
The teacher did a duplication check on the class list to make sure no name appeared twice.
RELATED WORDS
OTHER MEANINGS
2. A process in computing that finds and removes repeated copies of data.
The backup software runs a duplication check before saving the files.
3. An inspection to confirm that a record or entry has not been submitted more than once.
The bank's duplication check stopped the same payment from going through twice.
4. A quality-control step that looks for repeated items in a list or inventory.
A duplication check of the warehouse list showed two identical order numbers.