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 ?
The Catalyst Offer is for up to 14,836,795 of the outstanding common shares of the company.
The characterization results indicat that, the lower aging temperature was the most important for forming crystal centers on catalyst surface, and getting smaller regular crystal particles; therefore, the bigger specific surface can be available.
and Nissan Motor Co., evaluated the diesel cold start concept catalyst in combination with SCRF[R] and SCR catalysts in an emission control system on a developmental fuel efficient light-duty truck to meet the tight SULEV 30 emission targets.
While some customers supply a complete catalyst production formula and raw materials to set up a long-term provider relationship with Evonik for "their" catalyst, others discover the advantages of permanently transferring their catalyst production to Evonik while bridging a bottleneck in their in-house production.
Air Products (NYSE: APD), an Industrial Gases company, has launched a new series of catalyst and additive technologies that allow the use of low-Global Warming Potential Hydrofluoroolefin Blowing Agents in polyurethane foam applications.
The purchase also includes catalyst production plants in Pasadena, TX, and Tarragona, Spain.
As part of the company's full suite of testing services, CORMETECH can perform comprehensive Catalyst Activity Tests.
All of Evonik's future catalyst activities in India will be operated through the newly acquired company.
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.
However, this catalyst has issues related to embrittlement to radiation and thermal stability.
Mumbai-based Monarch Catalyst is a global catalyst supplier.