American English
/ˌdi.kəˈmɪ.ʃn̩/
4 syllables · Stress the third syllable.
to officially stop using a building, ship, machine, or other facility or equipment for its original purpose
Say “decommission” with the strongest beat on “mis”; the first syllable can also have a lighter beat: /ˌdi.kəˈmɪ.ʃn̩/.
to officially stop using a building, ship, machine, or other facility or equipment for its original purpose
The old power plant was decommissioned last year.
decommission a power plant · decommission a ship
It does not always mean to destroy or dismantle something; it may simply mean to stop using it officially.