de·​com·​mis·​sion | \ ˌdē-kə-ˈmi-shən How to pronounce decommission (audio) \
decommissioned; decommissioning; decommissions

Definition of decommission

transitive verb

: to remove (something, such as a ship or a nuclear power plant) from service

Examples of decommission in a Sentence

Several military bases are scheduled to be decommissioned. The government is decommissioning the nuclear power plant.
Recent Examples on the Web Naperville City Council members voted unanimously Tuesday to convert the Housing Advisory Commission into the Human Rights and Fair Housing Commission and to decommission the Downtown Advisory Commission. Rafael Guerrero,, "Naperville City Council approves expands, decommissions two advisory commissions," 16 Dec. 2020 This led to the NSF making the decision to decommission the telescope after 57 years. Ashley Strickland, CNN, "Arecibo Observatory collapses ahead of planned demolition," 1 Dec. 2020 For this reason, the National Science Foundation (NSF) announced yesterday that plans to decommission the telescope were underway. Rasha Aridi, Smithsonian Magazine, "After Suffering Irreparable Damage, It’s Lights Out for the Arecibo Observatory’s Iconic Telescope," 20 Nov. 2020 The process to decommission a telescope is a complicated one. Ashley Strickland, CNN, "The end is near for famed Arecibo Observatory's damaged telescope," 19 Nov. 2020 Allison Laff, deputy director of the city’s Transportation, Engineering and Development department, said the next step would be for the city to decommission the group. Suzanne Baker,, "Downtown Advisory Commission asks to disband as so members won’t violate open meetings laws," 13 Nov. 2020 Japan is working to decommission the Fukushima nuclear plant. oregonlive, "Japan expected to announce it will release radioactive water from crippled Fukushima nuclear plant into ocean," 19 Oct. 2020 For now, the state has no plans to decommission the field hospital, according to the Department of Administration. Guy Boulton, Milwaukee Journal Sentinel, "Field hospital in West Allis, costing more than $15 million, unneeded so far but still seen as a wise precaution," 8 July 2020 However, the board now still needs to approve LEEDCo’s plans to address a variety of topics, from mitigating harm to birds, bats, and fish to how to eventually decommission the wind farm. Jeremy Pelzer, cleveland, "Plans for Lake Erie wind farm clear a major hurdle, as ‘poison pill’ restriction is lifted," 17 Sep. 2020

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'decommission.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of decommission

1922, in the meaning defined above

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Time Traveler for decommission

Time Traveler

The first known use of decommission was in 1922

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Statistics for decommission

Last Updated

17 Jan 2021

Cite this Entry

“Decommission.” Dictionary, Merriam-Webster, Accessed 27 Feb. 2021.

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English Language Learners Definition of decommission

: to officially stop using (a ship, weapon, dam, etc.) : to remove (something) from service

More from Merriam-Webster on decommission

Nglish: Translation of decommission for Spanish Speakers

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