master copy

Found in Anh - Anh (Wordnet)

Definition Noun : 1. The original version of a work from which duplicates are produced : A "master copy" is the primary, authoritative source material used to create further copies. It is typically of the highest quality and serves as the reference point for all reproductions. Usage The term "master copy" is used to specify the original, definitive version of a recording, document, or data file...