Simple past tense and past participle of decommission.(verb)
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Use "decommissioned" in a sentence
"It's a very difficult number to deal with, because what we've done is we've, quote unquote, "decommissioned" some of the warheads."
"Netezza also "decommissioned" machines at 19 small accounts that accounted for under $300,000 in sales in fiscal 2010, and the official tally of customers, according to Patrick Scannell, Netezza's chief financial officer, stood at 325 at the end of the quarter."
"Take this section where team Blair are waiting for news from John de Chastelain on whether the IRA have "decommissioned" a weapons cache."