裂化 Traditional form: 裂化 Pinyin (reading): lièhuà Definitions: to crack (fractionally distill oil) Characters: 裂 - to split, to rend; crevice, crack 化 - to change, to convert, to reform; -ize Traditional characters: 裂 - to split, to rend; crevice, crack 化 - to change, to convert, to reform; -ize