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

catalyst

/ˈkat(ə)lɪst

noun

1A substance that increases the rate of a chemical reaction without itself undergoing any permanent chemical change: chlorine acts as a catalyst promoting the breakdown of ozone...

The key tools will be new breeds of enzymes - protein catalysts that speed up chemical reactions in cells.
Most converters use platinum or palladium metal catalysts that convert carbon monoxide and hydrocarbons to carbon dioxide and water vapor.
Heterogeneous catalysts are materials that increase the rate of a reaction, but are not in the same phase as the reactants.

1.1A person or thing that precipitates an event: the prime minister’s speech acted as a catalyst for debate...

Though the film is around these two men, it is the women who play the catalyst to all the events and add momentum to the story.
It is the union of the latter two that provides the catalyst for the events that follow.
In Scotland, it has always been Catholic schools which have been the catalyst for this debate.

Origin

Early 20th century: from catalysis, on the pattern of analyst.

单词	catalyst
释义	catalyst /ˈkat(ə)lɪst / noun 1A substance that increases the rate of a chemical reaction without itself undergoing any permanent chemical change: chlorine acts as a catalyst promoting the breakdown of ozone... The key tools will be new breeds of enzymes - protein catalysts that speed up chemical reactions in cells. Most converters use platinum or palladium metal catalysts that convert carbon monoxide and hydrocarbons to carbon dioxide and water vapor. Heterogeneous catalysts are materials that increase the rate of a reaction, but are not in the same phase as the reactants. 1.1A person or thing that precipitates an event: the prime minister’s speech acted as a catalyst for debate... Though the film is around these two men, it is the women who play the catalyst to all the events and add momentum to the story. It is the union of the latter two that provides the catalyst for the events that follow. In Scotland, it has always been Catholic schools which have been the catalyst for this debate. Origin Early 20th century: from catalysis, on the pattern of analyst. Rhymes philatelist
随便看	traditionless traditive traditor traditorship trad jazz tradocracy traduce traducement traducent traducer traducian traducianism traducianist traducianistic traducible traduct traductio traduction traductionist traductive traductor trady Trafalgar, Battle of Trafalgar Square traffic

catalyst

Origin

Rhymes