Pronunciation: (in'poot"out'poot"), [key] Computers.n.
the process of input or output, encompassing the devices, techniques, media, and data used: A good first step in designing a program is to define the input/output.
pertaining to input or output: Early input/output devices were slow. Abbr.: I/O
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.