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blowby definition

☆ blow·by (blō′bī′)

noun

in an internal-combustion engine, the escape of unburned gases past the piston rings into the crankcase

adjective

designating or of a device designed to eliminate such gases

Webster's New World College Dictionary Copyright © 2009 by Wiley Publishing, Inc., Cleveland, Ohio.
Used by arrangement with John Wiley & Sons, Inc.

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