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blowout preventer
(oil industry) A device that sits at the surface interface of an oil well and prevents a blowout from occurring by closing the orifice, allowing material to flow from the oil reservoir out through the shaft.
preventive war
War started by one of the parties without having received any attack from the other party. This type of war is initiated by states unable to use diplomacy
preventative maintenance
Maintenance done to keep something in working order rather than to repair damage that has already happened.
preventive service
Work done by the coastguard to prevent smuggling.
preventive services
preventative medicine
(medicine) medicine given to prevent illness, rather than treat it.
prevent defense
(team sports) Any defense intended to prevent rapid scoring by the offense, at the expense of allowing relatively easy, slower scoring.
preventive wars
plural of preventive war