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pos'itive crank'case ventila"tion



Auto.
a means of reducing air pollution by directing the fumes from the crankcase of an engine into the intake manifold, so that they will be channeled into the cylinders and burned. Abbr.: PCV

Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.

positive columnpositive definite

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