[dee-kuh-mish-uh n]

verb (used with object)

to remove or retire (a ship, airplane, etc.) from active service.
to deactivate; shut down: to decommission a nuclear power plant.

Origin of decommission

First recorded in 1925–30; de- + commission Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Related Words for decommission

deactivate, retire, demilitarize

Examples from the Web for decommission

Contemporary Examples of decommission

  • Will Obama decommission the U.S. Army, join the Non-Aligned Movement and invite Robert Mugabe to Camp David?

    The Daily Beast logo
    How Obama Divides—and Conquers

    Michael Fullilove

    May 16, 2009

Historical Examples of decommission

  • Some were building robots that could decommission leaky gas-stations and crater out the toxic soil.


    Cory Doctorow

British Dictionary definitions for decommission



(tr) to dismantle or remove from service (a nuclear reactor, weapon, ship, etc which is no longer required)
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 decommission

1922, originally with reference to warships, from de- + commission (v.). Related: Decommissioned; decommissioning.

Online Etymology Dictionary, © 2010 Douglas Harper