catalyst

名词 n.
中文释义
英 /ˈkæt.ɪ.lɪst/    美 /ˈkæt.ə.lɪst/|[ˈkæɾ.ə.lɪst]

英文释义

名词 n.
  1. A substance that increases the rate of a chemical reaction without being consumed in the process.
    — Enzymes, the catalysts of biological systems, are remarkable molecular devices that determine the pattern of chemical transformations.
  2. Something that encourages progress or change. figuratively
    — Economic development and integration are working as a catalyst for peace.
  3. An inciting incident that sets the successive conflict into motion.
    — The current view by both Labour and Conservative politicians is that the state of the UK railway is unsustainable, and the pandemic acted as a catalyst in exposing its weaknesses.
  4. A catalytic converter.
  5. An object that facilitates the casting of a spell (such as a magic wand).

词形变化

catalysts plural

词汇关系

衍生词
Adams's catalyst catalyse catalyze catalysis catalytic Grubbs' catalyst Lindlar catalyst phase-transfer catalyst stereospecific catalyst triphase catalyst Vandenberg catalyst Ziegler catalyst Ziegler-Natta catalyst
相关词
enzyme

词源

Etymology tree
English catalysis
Proto-Indo-European *-id-
Proto-Indo-European *-yéti
Proto-Indo-European *-idyéti
Proto-Hellenic *-íďďō
Ancient Greek -ῐ́ζω (-ĭ́zō)
Proto-Hellenic *-tās
Ancient Greek -τής (-tḗs)
Ancient Greek -ῐστής (-ĭstḗs)bor.
Latin -istader.
Old French -istebor.
Middle English -ist
English -ist
English catalyst
From catalysis + -ist.
0 次浏览 数据来源: Wiktionary