A unit of memory that is used by the system in managing memory. The size of a page is computer dependent and can be determined by using the GetSystemInfo function. The system manages memory by assigning pages of memory to specific processes, moving pages to and from a paging file on disk to keep the most recently used pages in physical memory (RAM), and maintaining a page map for each process that keeps track of the current physical location of each committed page in a process's virtual address space. See also committed page, page map.