Definition of "Format" :

noun: the general appearance of a publication

noun: the organization of information according to preset specifications (usually for computer processing)

verb: divide (a disk) into marked sectors so that it may store data

"Please format this disk before entering data!."

verb: determine the arrangement of (data) for storage and display (in computer science)

verb: set (printed matter) into a specific format

"Format this letter so it can be printed out."