catalystWiktionary 原文中文来自 ECDICTn.触媒，接触剂，催化剂，刺激因素，促进因素构词拆分catalysis词根/词干+-ist后缀Added to words to form nouns denoting:词源说明From catalysis + -ist.释义（英文）名词 Noun(chemistry) A substance that increases the rate of a chemical reaction without being consumed in the process.(encourages) Something that encourages progress