PCV valve Hear it!

PCV valve definition

PCV valve (pē′sē′vē′)

a one-way valve on a motor-vehicle engine for regulating a pollution control system that draws crankcase fumes into the cylinders for burning

Etymology: p(ositive) c(rankcase) v(entilation)

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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