pending input/output

pending input/output

[′pend·iŋ ′in‚pu̇t ′au̇t‚pu̇t]
(computer science)
An input/output operation that has been initiated but not yet carried out, so that the central processing unit either is temporarily idle or services other programs and tasks until the operation is completed.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.