SyStem> An area of diSk (e.g. a Swap file) uSed to Store the State of a proceSS that haS been Swapped out. Under a virtual memorySyStem, it iS the amount of Swap Space rather than the amount of phySical memory which determineS the maximum Size of a Single proceSS and the maximum total Size of all active proceSSeS. [Jargon File] (1994-11-03)