least frequently used
Also found in: Acronyms.
least frequently used[′lēst ¦frē·kwənt·lē ′yüzd]
A technique for using main storage efficiently, in which new data replace data in storage locations that have been used least often, as determined by an algorithm.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.