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decommission

American  
[dee-kuh-mish-uhn] / ˌdi kəˈmɪʃ ən /

verb (used with object)

  1. to remove or retire (a ship, airplane, etc.) from active service.

  2. to deactivate; shut down.

    to decommission a nuclear power plant.
decommission British  
/ ˌdiːkəˈmɪʃən /

verb

  1. (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

Etymology

Origin of decommission

First recorded in 1925–30; de- + commission

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.