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 California has been seeking permission from federal rail regulators to decommission much of the 320-mile rail network, connecting the San Francisco Bay with the port at Humboldt Bay, and repurpose it as the Great Redwood Trail. Brian Maffly, The Salt Lake Tribune, 9 Sep. 2021 But getting there from the fleet’s low-point—278 battle-force ships in 2007—required steady production of around 14 new ships a year, assuming the fleet didn’t also decommission too many older vessels too quickly. David Axe, Forbes, 21 June 2021 If the Navy’s plans to decommission up to six Littoral Combat Ships are approved, 31 Littoral Combat Ships will remain. Craig Hooper, Forbes, 23 June 2021 The Samuel Lawrence Foundation argued the Nuclear Regulatory Commission provides leeway for Edison to determine how to decommission the plant and the Coastal Commission should go back and conduct its own analysis. Rob Nikolewski, San Diego Union-Tribune, 16 June 2021 Acting mayor Austin Quinn-Davidson last month announced a plan to decommission the Sullivan Arena shelter and create a smaller shelter in Midtown along with other options for the city’s homeless population. Emily Goodykoontz, Anchorage Daily News, 16 June 2021 The sailing branch also wants to decommission several other LCSs as the Freedoms in particular struggle with deep flaws in their propulsion systems. David Axe, Forbes, 16 June 2021 To decommission the Pirs module, the scientists had to disconnect cables and prepare other hardware for the moment when the module will be cut loose. Mike Wehner, BGR, 3 June 2021 Plans to decommission the third ship of the class, the Fort Worth, and the fourth, the Coronado, were nixed by Congress in this year’s budget. Andrew Dyer, San Diego Union-Tribune, 15 May 2021

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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Last Updated

14 Sep 2021

Cite this Entry

“Decommission.” Dictionary, Merriam-Webster, Accessed 19 Sep. 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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