英语词汇“catalyst”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

cat•a•lyst n. [countable]

Chemistrya substance that causes or speeds up a chemical reaction without itself being affected:The enzyme was a catalyst in that reaction.
a person or thing that brings about change.

See -lys-.

cat•a•lyst n.

Chemistrya substance that causes or accelerates a chemical reaction without itself being affected.
something that causes activity between two or more persons or forces without itself being affected.
a person or thing that precipitates an event or change:His imprisonment by the government served as the catalyst that helped transform social unrest into revolution.
a person whose talk, enthusiasm, or energy causes others to be more friendly, enthusiastic, or energetic.

cataly(sis) + (-i)st 1900–05

catalyst /ˈkætəlɪst/ n

a substance that increases the rate of a chemical reaction without itself suffering any permanent chemical change
a person or thing that causes a change

单词	catalyst
释义	WordReference Random House Learner's Dictionary of American English © 2024 cat•a•lyst /ˈkætəlɪst/USA pronunciation n. [countable] Chemistrya substance that causes or speeds up a chemical reaction without itself being affected:The enzyme was a catalyst in that reaction. a person or thing that brings about change. See -lys-. WordReference Random House Unabridged Dictionary of American English © 2024 cat•a•lyst (kat′l ist),USA pronunciation n. Chemistrya substance that causes or accelerates a chemical reaction without itself being affected. something that causes activity between two or more persons or forces without itself being affected. a person or thing that precipitates an event or change:His imprisonment by the government served as the catalyst that helped transform social unrest into revolution. a person whose talk, enthusiasm, or energy causes others to be more friendly, enthusiastic, or energetic. cataly(sis) + (-i)st 1900–05 Collins Concise English Dictionary © HarperCollins Publishers:: catalyst /ˈkætəlɪst/ n a substance that increases the rate of a chemical reaction without itself suffering any permanent chemical change a person or thing that causes a change
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