| Subject | English | Catalan |
| comp., MS | master boot code | codi d'arrencada mestra (A small amount of executable code contained in the master boot record that scans the partition table for the active partition, finds the starting sector of the active partition, loads a copy of the boot sector from the active partition into memory, and transfers control to the executable code in the boot sector) |
| cinema | master copy | màster |
| cinema | master copy | còpia mestra |
| comp., MS | master key | clau mestra (The key used by the client and server for all session key generation. The master key is used to generate the client-read key, the client-write key, the server-read key, and the server-write key. Master keys can be exported as simple key BLOBs) |
| comp., MS | master-level guide | guia dels patrons (A guide that is created and edited in Slide Master view, and that applies to slides that use the master layout in which it was created) |
| comp., MS | Master Page Gallery | Galeria de pàgines mestres (A collection of pages with the .master extension that define shared page elements and content place holders) |
| proj.manag. | master plan | pla mestre |
| cinema | master print | màster |
| cinema | master print | còpia mestra |
| math. | master sample | mostra principal |