(1) A storage allocation technique in which programs or data are divided into fixed-length blocks called pages, main storage is divided into blocks of the same length called page frames, and pages are stored in page frames, not necessarily contiguously or in logical order.~(2) A storage allocation technique in which programs or data are divided into fixedlength blocks called pages, main storage is divided into blocks of the same length called page frames, and pages are transferred between main and auxiliary storage as needed.~(3) The transfer of pages as in (2)