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.

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decommission British  

/ ˌdiːkəˈmɪʃən /

verb

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

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Etymology

Origin of decommission

First recorded in 1925–30; de- + commission

Example Sentences

Cembalest highlights research undertaken by JPMorgan that scrutinized the costs incurred to the German economy stemming from its decision to decommission its nuclear power plants after the Fukushima incident.

From MarketWatch • Mar. 9, 2026

One example: his threat to decommission a spacecraft that transports National Aeronautics and Space Administration astronauts to the International Space Station.

From The Wall Street Journal • Oct. 31, 2025

Once all hostages are returned, Hamas members who commit to peaceful co-existence and to decommission their weapons will be given amnesty.

From BBC • Sep. 30, 2025

Other sources of power in L.A.’s portfolio include hydrogen, natural gas, biomass, geothermal, nuclear and coal, which the city aims to decommission by the end of this year.

From Los Angeles Times • Aug. 6, 2025

When an oil well comes to the end of its life, its operator has a responsibility to permanently decommission it.

From BBC • Jul. 10, 2025