catalysis – מילון אנגלי-אנגלי
catalysis
n.
acceleration of a chemical reaction caused by a substance that remains unchanged by the process; changes brought about by an agent that is unaffected by those same changes
Catalysis
Catalysis is the increase in the
rate of a
chemical reaction due to the participation of an additional substance called a
catalyst . With a catalyst, reactions occur faster and require less
activation energy. Because catalysts are not consumed in the catalyzed reaction, they can continue to catalyze the reaction of further quantities of reactant. Often only tiny amounts are required.
catalysis
Noun
1. acceleration of a chemical reaction induced the presence of material that is chemically unchanged at the end of the reaction; "of the top 50 commodity chemicals, 30 are created directly by catalysis and another 6 are made from raw materials that are catalytically produced"
(synonym) contact action
(hypernym) chemical process, chemical change, chemical action
(hyponym) autocatalysis
catalysis
n.
katalýza
Catalysis
(n.)
The catalytic force.
(n.)
Dissolution; degeneration; decay.
(n.)
A process by which reaction occurs in the presence of certain agents which were formerly believed to exert an influence by mere contact. It is now believed that such reactions are attended with the formation of an intermediate compound or compounds, so that by alternate composition and decomposition the agent is apparenty left unchanged; as, the catalysis of making ether from alcohol by means of sulphuric acid; or catalysis in the action of soluble ferments (as diastase, or ptyalin) on starch.
Webster's Revised Unabridged Dictionary (1913), edited by Noah Porter.
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