intercom

[ in-ter-kom ]
/ ˈɪn tərˌkɒm /

noun Informal.

an intercommunication system.
a microphone or receiver of an intercommunication system.

RELATED WORDS

Origin of intercom

First recorded in 1935–40; by shortening
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

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British Dictionary definitions for intercom

intercom

/ (ˈɪntəˌkɒm) /

noun

informal an internal telephone system for communicating within a building, an aircraft, etc

Word Origin for intercom

C20: short for intercommunication
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for intercom

intercom


n.

1940, colloquial shortening of intercommunication (mid-15c., "discussion, conference;" see inter- + communication), which is attested from 1911 in reference to systems of linked telephones.

Online Etymology Dictionary, © 2010 Douglas Harper