noun Informal.

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

Origin of intercom

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

Related Words for intercom

pager, walky-talky

Examples from the Web for intercom

Contemporary Examples of intercom

Historical Examples of intercom

  • Lee Gorman looked at the intercom on his desk as though it had snapped at him.

    The Big Tomorrow

    Paul Lohrman

  • In his Fort, Allison drawled over the intercom, "Pilot to navigator."

  • The intercom buzzed again, and Gelsen irritably punched a button.


    Robert Sheckley

  • Johnson spoke casually, but his voice in the intercom was thin with tension.


    Irving W. Lande

  • Forster recognized the voice on the intercom as Tom Summerford's.

British Dictionary definitions for intercom



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

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