WordReference Random House Unabridged Dictionary of American English © 2025
cat′alyt′ic crack′ing,
- Chemistrythe 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).
'catalytic cracking' also found in these entries (note: many are not synonyms or translations):