Definition of "exfiltration" [exfiltration]

• The process of exiting an area (usually behind enemy lines or in enemy territory). (noun)
• A method for managing storm water runoff. (noun)

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• "Success was to be defined as the exfiltration of Bin Ladin out of Afghanistan.28 A meeting of principals was scheduled for May 29 to decide whether the operation should go ahead."
• "In the sensitive areas where attempts at 'exfiltration' are insistent the vigilance is sharp and every day someone, somewhere along the nine hundred miles of the Frontier, dies, a worn coat puckered by a ballet and a hand going out to break the fall of the living body that is dead before it meets the ground; and there is special leave for the man who shot him down."
• "The article also notes that despite the film's suggestion that Iraqi scientists became sacrificial lambs during their "exfiltration" from the country, an intelligence insider told us: "Something like this, if it was going on, wouldn't have been canceled for this reason.""