We've found 8 definitions containing the term in operation (4.57 seconds):

«definition»  What does in operation mean?                being in effect or operation

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		SCOR	Supply Chain Operations Reference	Governmental » Military
		ITOR	International Transactions in Operations Research	Community » Media
		ATO	Automatic Train Operation	Governmental » Transportation
		OPTO	One Person Train Operation	Governmental » Transportation
		WOLI	Wisconsin Operation Lifesaver, Inc.	Community
		QFS	Is the radio facility at ... in operation?	Governmental » Transportation
		QFD	Is the ... visual beacon at (place) in operation?	Governmental » Transportation
		MOB	Main Operation Base	Governmental » Military
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