English: back office
Welsh: swyddfa gefn
Subject: Personél
Welsh definition: The part of a business company that is concerned with running the company and that does not deal directly with customers or the public
Notes: Mae'n bosibl y gellid defnyddio "corfforaethol" pan fydd "back office" yn codi mewn termau cyfansawdd fel "back office functions", gan ddibynnu ar y cyd-destun.