master copy

• Versión original de un documento, grabación o archivo a partir de la cual se hacen copias; ejemplar principal de referencia o fuente.

An original version of a document, recording, or file from which copies are made; the primary reference or source.

1. B2formal

   The original version of a document, recording, or file from which copies are made.

   copia maestra

   • Please keep the master copy safe in the archive.
   • The master copy of the contract is stored in the office.
   • We need to refer to the master copy for the correct data.