instant messaging

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instant messaging

n.
The transmission of an electronic message over a computer network using software that immediately displays the message in a window on the screen of the recipient.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

instant messaging

n
(Computer Science) computing the online facility that allows the instant exchange of written messages between two or more people using different computers or mobile phones. Abbreviation: IM
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014

instant messaging

A program that allows users to communicate with each other instantaneously using typed messages.
Dictionary of Unfamiliar Words by Diagram Group Copyright © 2008 by Diagram Visual Information Limited