catalyst
n. substance that accelerates a chemical reaction but remains unchanged by it; someone or something which provokes change | ||||
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Catalyst definition was found in categories: Language, Idioms & Slang(2) Science & Technology(6) Society & Culture(2) Business & Finance(2) Medicine(3) Entertainment & Music(1) Computer & Internet(2) Encyclopedia(1)
Catalyst Definition from Language, Idioms & Slang Dictionaries & Glossaries
| WordNet 2.0 |
catalyst
Noun
1. (chemistry) a substance that initiates or accelerates a chemical reaction without itself being affected
(synonym) accelerator
(antonym) anticatalyst
(hypernym) activator
(hyponym) biocatalyst
(derivation) catalyze, catalyse
(classification) chemistry, chemical science
2. something that causes an important event to happen; "the invasion acted as a catalyst to unite the country"
(hypernym) causal agent, cause, causal agency
Noun
1. (chemistry) a substance that initiates or accelerates a chemical reaction without itself being affected
(synonym) accelerator
(antonym) anticatalyst
(hypernym) activator
(hyponym) biocatalyst
(derivation) catalyze, catalyse
(classification) chemistry, chemical science
2. something that causes an important event to happen; "the invasion acted as a catalyst to unite the country"
(hypernym) causal agent, cause, causal agency
| hEnglish - advanced version |
catalyst
catalyst
n
1. (chemistry) a substance that initiates or accelerates a chemical reaction without itself being affected [syn: accelerator]
[ant: anticatalyst]
2. something that causes an important event to happen; "the invasion acted as a catalyst to unite the country"
catalyst
n
1. (chemistry) a substance that initiates or accelerates a chemical reaction without itself being affected [syn: accelerator]
[ant: anticatalyst]
2. something that causes an important event to happen; "the invasion acted as a catalyst to unite the country"
Catalyst Definition from Science & Technology Dictionaries & Glossaries
| EIA Energy Glossary |
Petroleum coke, catalyst
The carbonaceous residue that is deposited on and deactivates the catalyst used in many catalytic operations (e.g., catalytic cracking). Carbon is deposited on the catalyst, thus deactivating the catalyst. The catalyst is reactivated by burning off the carbon, which is used as a fuel in the refining process. That carbon or coke is not recoverable in a concentrated form.
The carbonaceous residue that is deposited on and deactivates the catalyst used in many catalytic operations (e.g., catalytic cracking). Carbon is deposited on the catalyst, thus deactivating the catalyst. The catalyst is reactivated by burning off the carbon, which is used as a fuel in the refining process. That carbon or coke is not recoverable in a concentrated form.
| Bioglossary |
Catalyst
Description: A substance that speeds up a chemical reaction, but is not itself changed during the reaction.
Source: Specialized encyclopedia and dictionaries
Description: A substance that speeds up a chemical reaction, but is not itself changed during the reaction.
Source: Specialized encyclopedia and dictionaries
| Oil and Gas Field Glossary |
Catalyst
A substance which aids or promotes a chemical reaction without forming part of the final product. It enables the reaction to take place faster or at a lower temperature, and remains unchanged at the end of the reaction. In industrial processes, nevertheless, the catalyst must be changed periodically to maintain economic production.
A substance which aids or promotes a chemical reaction without forming part of the final product. It enables the reaction to take place faster or at a lower temperature, and remains unchanged at the end of the reaction. In industrial processes, nevertheless, the catalyst must be changed periodically to maintain economic production.
| Electrochemistry Dictionary |
catalyst
A material that can cause catalysis.
A material that can cause catalysis.
| General Chemistry Glossary |
catalyst (catalyze; catalysis)
Say it
A substance which increases the rate of a chemical reaction without being consumed or produced by the reaction. Catalysts speed both the forward and reverse reactions, without changing the position of equilibrium . Enzymes are catalysts for many biochemical reactions.
A substance which increases the rate of a chemical reaction without being consumed or produced by the reaction. Catalysts speed both the forward and reverse reactions, without changing the position of equilibrium . Enzymes are catalysts for many biochemical reactions.
| Web Dictionary of Cybernetics and Systems |
Catalyst
A property, event or material substance that must be present to synthesize or produce some other property, event or material substance without becoming part of the result of the process. In chemistry, catalysts speed up or slow down a chemical reaction without undergoing permanent chemical change thereby. An example of a catalyst in society is the justice of peace or the priest who is necessary to legalize a marriage but does not himself participate in it. The assembly of a machine according to information carrying instructions is another example. (Krippendorff)
A property, event or material substance that must be present to synthesize or produce some other property, event or material substance without becoming part of the result of the process. In chemistry, catalysts speed up or slow down a chemical reaction without undergoing permanent chemical change thereby. An example of a catalyst in society is the justice of peace or the priest who is necessary to legalize a marriage but does not himself participate in it. The assembly of a machine according to information carrying instructions is another example. (Krippendorff)
Catalyst Definition from Society & Culture Dictionaries & Glossaries
| EPA Terms of Environment |
Catalyst
A substance that changes the speed or yield of a chemical reaction without being consumed or chemically changed by the chemical reaction.
A substance that changes the speed or yield of a chemical reaction without being consumed or chemically changed by the chemical reaction.
| Environmental Engineering (English ver.) |
CATALYST
A substance that alters the speed of a reaction, but does not change the form or amount of product. For example, Enzymes are biological catalysts, enhancing reactions within living organisms.
A substance that alters the speed of a reaction, but does not change the form or amount of product. For example, Enzymes are biological catalysts, enhancing reactions within living organisms.
catalyst (CAT-uh-LIST)
A substance that changes the speed or yield of a chemical reaction without being consumed or chemically changed by the chemical reaction.
Catalyst Definition from Business & Finance Dictionaries & Glossaries
| Glossary of petroleum Industry |
CATALYST
A substance which hastens or retards a chemical reaction without undergoing a chemical change itself during the process. catalyst a substance that alters, accelerates, or instigates chemical reactions without itself being affected.
A substance which hastens or retards a chemical reaction without undergoing a chemical change itself during the process. catalyst a substance that alters, accelerates, or instigates chemical reactions without itself being affected.
| Company Info: Ticker, Name, Description |
CATS
Catalyst Semiconductor, Inc.
Exchange: Nasdaq
Designs, develops and markets broad range nonvolatile semiconductor memory products which retain stored data when the system power is turned off.
Catalyst Semiconductor, Inc.
Exchange: Nasdaq
Designs, develops and markets broad range nonvolatile semiconductor memory products which retain stored data when the system power is turned off.
CLYS
Catalyst International, Inc.
Exchange: Nasdaq
Develops, markets and supports advanced warehouse management software solutions; And provides related services, including software modification and configuration, project management, rapid prototyping, training and implementation support.
Catalyst Definition from Medicine Dictionaries & Glossaries
| Aids Glossary |
catalyst
an agent that promotes or accelerates a chemical reaction without itself being consumed.
an agent that promotes or accelerates a chemical reaction without itself being consumed.
| Hepatitis Central (TM) Liver Disease Medical Glossary |
Catalyst
Substance that causes a chemical reaction to go faster, but is not itself changed during the reaction
Substance that influences the rate of a chemical reaction without being changed in the process. Usually present in very small amounts
Substance that causes a chemical reaction to go faster, but is not itself changed during the reaction
Substance that influences the rate of a chemical reaction without being changed in the process. Usually present in very small amounts
| TOXICOLOGY |
Catalyst
A substance that accelerates a reaction.
A substance that accelerates a reaction.
Catalyst Definition from Entertainment & Music Dictionaries & Glossaries
| English to Federation-Standard Golic Vulcan |
Catalyst
torai-tukh
torai-tukh
Catalyst Definition from Computer & Internet Dictionaries & Glossaries
| TCP/IP Ports Assignments |
2836/tcp
{catalyst}
catalyst.
{catalyst}
catalyst.
2836/udp
{catalyst}
catalyst.
| TCP/IP Ports Assignments (Intrusive) |
2836/tcp
{catalyst}
catalyst.
{catalyst}
catalyst.
2836/udp
{catalyst}
catalyst.
Catalyst Definition from Encyclopedia Dictionaries & Glossaries
| Wikipedia English - The Free Encyclopedia |
Catalysis
In chemistry and biology, catalysis is the acceleration (increase in rate) of a chemical reaction by means of a substance called a catalyst, which is itself not consumed by the overall reaction. More generally, one may at times call anything that accelerates a process, a "catalyst" (for example, a "catalyst for political change"). The word is derived from the Greek noun κατάλυσις, related to the verb καταλύειν, meaning to annul or to untie or to pick up.
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