1. mastercopy - Noun
2. mastercopy - Verb
mastercopy (plural mastercopies)
Alternative form of master copy
(transitive, intransitive, publishing, printing) To transfer edits to a master copy from various stakeholders' copies (as for example with multiple authors and editors).
(transitive, intransitive, fine arts) To copy from a master artist or a work thereof (a master or masterpiece); to produce a replica of a masterpiece, for purposes including training, enjoyment, homage, pastiche, or otherwise.
Source: en.wiktionary.org