催化剂 Traditional form: 催化劑 Pinyin (reading): cuīhuàjì Definitions: catalyst Characters: 催 - to press, to urge 化 - to change, to convert, to reform; -ize 剂 - dose; medicine; measure word for medicines Traditional characters: 催 - to press, to urge 化 - to change, to convert, to reform; -ize 劑 - dose; medicine; measure word for medicines