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.
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The acidity of these catalysts has been improved greatly, but the total acid amount is less than liquid acid.
Honeywell today announced that Empresa Nacional del Petroleo (ENAP) has begun using Honeywell UOPs HYT-6219 Unity hydrotreating catalyst in conjunction with Unity hydrocracking catalysts to produce cleaner-burning diesel fuel at its Bo Bo refinery in Hualpen, Chile.
Although the emission control systems currently installed on diesel vehicles are effective and reach high conversions, the exhaust temperature has to be above the operating temperature of the catalysts, which is typically above 200 [degrees]C.
One of the first catalysts manufactured at the Marl, Germany site, almost 80 years ago, then part of Chemische Werke HE-ls, involved a catalyst for the production of butadiene, an important raw material for the production of synthetic rubber
has announced its acquisition of the polyolefin catalysts business of BASF SE for an undisclosed price.
Durham, NC, March 13, 2016 --(PR.com)-- By closely analyzing their catalysts and reviewing catalyst performance, power generation companies can maximize their process efficiency while ensuring they meet the rigid environmental standards set in place by government agencies around the world.
Adding Monarch's global activities in oils and fats hydrogenation catalysts will broaden Evonik's current catalysts portfolio.
Kuwait Catalyst Company (KCC) estimates there will be significant demand for hydroprocessing catalysts locally and internationally in the foreseeable future and plans to double its production capacity.
Catalysts used to collect tritium are called "hydrophobic precious metal catalysts" based on precious metals such as platinum.