catalyst


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cat·a·lyst

 (kăt′l-ĭst)
n.
1. 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.
2. One that precipitates a process or event, especially without being involved in or changed by the consequences: "A free press ... has remained ... a vital catalyst to an informed and responsible electorate" (Robert O'Neal).

[From catalysis.]

catalyst

(ˈkætəlɪst)
n
1. (Chemistry) a substance that increases the rate of a chemical reaction without itself suffering any permanent chemical change. Compare inhibitor2
2. a person or thing that causes a change

cat•a•lyst

(ˈkæt l ɪst)

n.
1. a substance that causes or speeds a chemical reaction without itself being affected.
2. a person or thing that precipitates an event or change.
[1900–05; cataly (sis) + (-i) st]

cat·a·lyst

(kăt′l-ĭst)
A substance that starts or speeds up a chemical reaction while undergoing no permanent change itself. The enzymes in saliva, for example, are catalysts in digestion.

catalyze verb

catalyst

A substance which alters the rate of a chemical reaction. It takes part in the reaction but remains chemically unchanged by it.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.catalyst - (chemistry) a substance that initiates or accelerates a chemical reaction without itself being affectedcatalyst - (chemistry) a substance that initiates or accelerates a chemical reaction without itself being affected
chemical science, chemistry - the science of matter; the branch of the natural sciences dealing with the composition of substances and their properties and reactions
activator - (biology) any agency bringing about activation; a molecule that increases the activity of an enzyme or a protein that increases the production of a gene product in DNA transcription
biocatalyst - a biochemical catalyst such as an enzyme
enzyme - any of several complex proteins that are produced by cells and act as catalysts in specific biochemical reactions
platinum black - a fine black powder of platinum; used as a catalyst in chemical reactions
anticatalyst - (chemistry) a substance that retards a chemical reaction or diminishes the activity of a catalyst
2.catalyst - something that causes an important event to happen; "the invasion acted as a catalyst to unite the country"
causal agency, causal agent, cause - any entity that produces an effect or is responsible for events or results

catalyst

noun
An agent that stimulates or precipitates a reaction, development, or change:
Translations
حَفّاز، مُحَفِّزمادَّةٌ حَفّازَه
katalyzátor
drivkraftigangsætterkatalysator
katalysaattorikatalyytti
hvatamaîur, hvatihvati
kas pagreitina permainaskatalizatoriuskatalizuojantis
katalizators
katalyzátor
katalizörnedensebep

catalyst

[ˈkætəlɪst] N (Chem, fig) → catalizador m

catalyst

[ˈkætəlɪst] n
(= person, event) → catalyseur m
to act as a catalyst → servir de catalyseur
(CHEMISTRY)catalyseur m

catalyst

n (lit, fig)Katalysator m

catalyst

[ˈkætəlɪst] n (all senses) → catalizzatore m

catalyst

(kӕtəlist) noun
1. a substance which causes or assists a chemical change in another substance without itself undergoing any permanent chemical change.
2. someone or something that helps bring about a change.
ˌcataˈlytic adjective

cat·a·lyst

a. catalítico-a, agente estimulante de una reacción química sin afectarla.
References in periodicals archive ?
Polycat 8 industry-standard catalyst for spray systems and pour-in-place rigid applications.
Catalyst looked beyond its frustration and took a hard look at operations.
A catalyst converts these ingredients into fatty acid alkyl esters, the compounds that constitute biodiesel.
market for polymerization catalysts is forecast to grow 5.
However, in order to achieve NOx emission levels under the Euro 5 limit, more frequent catalyst regeneration will be necessary.
The more than 20 speakers were split on the board's recent decision banning Catalyst from local campuses after a speaker explained methods of preventing the transmission of HIV, the virus that causes AIDS, through oral sex.
Product Overview II-3 Definition of Catalyst II-3 Types of Catalysts II-3 The Exogenous Initiators II-3 Types of Chemical Processing Catalysts II-4 Polymerization Catalysts- The Leading Catalyst Segment II-4 Metallocene Catalysts II-4 Used to Manufacture a Vast Range of Polymers II-4 Metallocene & SSC: Pinnacles In Polymer Technology II-5 Late Transition-Metal Catalysts: Slowly Eating into The Metallocene Pie II-5 Oxidation Catalysts II-5 Organic Synthesis Catalysts II-6 Synthesis Gas Catalysts II-6 Hydrogenation Catalysts II-6 Dehydrogenation Catalysts II-7 Biocatalysts II-7 Eco-Friendly is in II-7
Morris Bullock and Vladimir Dioumaev at Brookhaven developed a tungsten-based catalyst for combining a ketone and an organic silicon compound to form an alkoxysilane.
Product Overview II-13 Refining II-13 Catalyst Defined II-13 Types of Catalysts II-13 The Need for Catalysts .
These basic catalyst systems were used to build the polyolefin industries that exist today, including polyethylene in all of its forms (HDPE, LLDPE, VLDPE, ULDPE) and syndiotactic polypropylene.
This enables researchers to filter the catalyst out and reuse it easily once the chemical transformation is complete.
Amine-based catalysts for flexible and rigid applications include PM-DETA, TM-PDA, TM-HDA, N,N-dimethylcyclohexylamine, N-methylmorpholine, N-ethylmorpholine, I-methylimidazole, 1,2-dimethylimidazole, dimethylethanolamine, and triethylamine.