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Dictionary

cat'alyt'ic crack'ing

the reduction of the molecular weight of hydrocarbons by a catalyst, accomplished in a petroleum refinery by a type of chemical reactor (cat'alyt'ic crack'er) . Cf. cracker (def. 8), cracking (def. 1).

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

catalytic converter

catalyze

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