catalyst

名词 catalyst:

1. (chemistry) a substance that initiates or accelerates a chemical reaction without itself being affected
   同义词：accelerator
2. something that causes an important event to happen

1. A process by which the hydrocarbon molecules of petroleum are broken into simpler molecules, as of gasoline or kerosene, by the addition of hydrogen under high pressure and in the presence of a catalyst.
   氢化裂解将石油的含氢分子分裂成更简单的分子(象汽油和煤油的分子)的过程，此分裂过程是在加催化剂及高压氢气的条件上进行的
2. A substance, especially an enzyme, that initiates or modifies the rate of a chemical reaction in a living body; a biochemical catalyst.
   生物催化剂能在活的体内产生化学反应或改变生物体内化学反应速度的物质，尤指酶; 生物化学催化剂
3. The offer of a new job provided just the catalyst she needed.
   这份新工作正是她所需要转变的契机。

cat.a.lyst

n.（名词）
Chemistry A substance, usually used in small amounts relative to the reactants, that modifies and increases the rate of a reaction without being consumed in the process.
【化学】 催化剂：一种与反应物相关、通常以小剂量使用的物质，用来改变和加快反应速度，而自身在反应过程中不被消耗
One that precipitates a process or event, especially without being involved in or changed by the consequences.
触媒：加速一个过程或事件的进度，但自身并未卷入或不被其后果改变的物质

来源：
From catalysis
源自 catalysis

<参考词汇><同义词>catalyst,ferment,leaven,leavening,yeastThe central meaning shared by these nouns is .an agent that stimulates or precipitates a reaction, development, or change.:
这些名词共有的中心意思是.剌激或加速反应、发展或变化速度的动因.：
例句：
a serious breach of trust that was the catalyst for the divorce;
成为离婚催化剂的一次严重的背信行为；

例句：
love, the most powerful ferment;
爱，最有力的改变媒介；

例句：
the leaven of reform working in their minds;
变革的媒介在他们的头脑中运作；

例句：
a leavening of humor;
幽默的发酵剂；

例句：
the yeast of revolution.
引发革命的介质