merge-purge
noun [ C or U ]
(also merge/purge) ukus IT, MARKETING
the process of combining two or more lists of customer details and removing those that are not needed, for example those that appear twice:
We are a worldwide leading provider of affordable merge-purge software that is easy to use.
merge-purge
verb [ T ]
Several subscriber mailing lists can be merged-purged to eliminate duplication.