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catalyst    音标拼音: [k'ætələst] [k'ætəlɪst]
n. 触媒剂

触媒剂

catalyst
触媒

catalyst
n 1: (chemistry) a substance that initiates or accelerates a
chemical reaction without itself being affected [synonym:
{catalyst}, {accelerator}] [ant: {anticatalyst}]
2: something that causes an important event to happen; "the
invasion acted as a catalyst to unite the country"

catalyst \catalyst\ n.
1. (Chem.) a substance that initiates or accelerates a
chemical reaction without itself being affected; as,
thousands of enzymes serve in concert as calaysts to
produce the sequence of reactions we call "life"; the
industrial production of cheap ammonia depended on finding
a good catalyst.
[WordNet 1.5]

2. something that serves as a precipitating occasion for an
event; as, the invasion acted as a catalyst to unite the
country.

Note: A catalyst is never the main cause of an event, but may
serve to hasten events for which the underlying causes
are present prior to the appearance or occurrence of
the catalyst.
[WordNet 1.5 PJC]

3. something or someone that causes events to happen with
itself being changed.
[PJC]

75 Moby Thesaurus words for "catalyst":
agent, agent provocateur, agitator, agitprop, alterant, alterative,
alterer, author, begetter, beginner, catalysis, catalytic agent,
causer, creator, decay, demagogue, dialysis, dissociation,
effector, engenderer, exciter, father, ferment, firebrand, fission,
fomenter, generator, goad, hydrolysis, hydrolyst, impetus, impulse,
incendiary, incentive, incitation, incitement, inciter, inflamer,
innovationist, innovator, inspirer, instigator, introducer, leaven,
maker, mischief-maker, modificator, modifier, mother, motivation,
mover, originator, parent, photolysis, precursor, prime mover,
primum mobile, producer, provocateur, provoker, rabble-rouser,
ringleader, rouser, seditionary, seditionist, sire, splitting,
spur, stimulant, thermolysis, transformer, transmogrifier,
troublemaker, urger, yeast


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  • CATALYST Definition Meaning - Merriam-Webster
    The meaning of CATALYST is a substance that enables a chemical reaction to proceed at a usually faster rate or under different conditions (as at a lower temperature) than otherwise possible How to use catalyst in a sentence
  • Catalysis - Wikipedia
    Catalysis ( k ə ˈ t æ l ə s ɪ s ) is the increase in rate of a chemical reaction due to an added substance known as a catalyst [1] [2] ( ˈ k æ t əl ɪ s t ) Catalysts are not consumed by the reaction and remain unchanged after it [3]
  • CATALYST | English meaning - Cambridge Dictionary
    CATALYST definition: 1 something that makes a chemical reaction happen more quickly without itself being changed 2 an… Learn more
  • Catalyst | Examples, Definition, Facts | Britannica
    Catalyst, in chemistry, any substance that increases the rate of a reaction without itself being consumed Enzymes are naturally occurring catalysts responsible for many essential biochemical reactions
  • Catalyst - Definition, Meaning Synonyms | Vocabulary. com
    A catalyst is an event or person causing a change Getting kicked out of your parents' house might be a catalyst for becoming more independent
  • What Is a Catalyst? Understand Catalysis - Science Notes and Projects
    In chemistry and biology, a catalyst is a substance the increases the rate of a chemical reaction without being consumed by it Catalysis is the process of speeding up a reaction using a catalyst The word “catalyst” comes from the Greek word kataluein, which means to loosen or untie
  • What Is a Catalyst and How Does It Work? - sciencenewstoday. org
    Let’s start with the simplest definition A catalyst is a substance that speeds up a chemical reaction without itself undergoing any permanent chemical change In other words, it’s not consumed in the reaction—it merely facilitates it Catalysts don’t change the final outcome of a reaction
  • CATALYST Definition Meaning | Dictionary. com
    Catalyst definition: a substance that causes or accelerates a chemical reaction without itself being affected See examples of CATALYST used in a sentence
  • DOE Explains. . . Catalysts | Department of Energy
    A catalyst is a substance that speeds up a chemical reaction, or lowers the temperature or pressure needed to start one, without itself being consumed during the reaction Catalysis is the process of adding a catalyst to facilitate a reaction
  • Home : The Catalyst Center for Business Entrepreneurship
    The Catalyst Center for Business Entrepreneurship The Catalyst Center serves entrepreneurs and small business owners in every stage of business We aim to provide best-in-class coaching, in-demand services, and relevant programs to foster small businesses’ success Start a Business Grow or strengthenmy business Do business withthe government Accelerate my woman-owned business As a project





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