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noun

Catalysis n. (pl. catalyse)

Dissolution; degeneration; decay. (R.) "Sad catalysis and declension of piety."

(Chem.)

(a)

A process by which a chemical reaction is accelerated 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 enzymes (as diastase, or ptyalin) on starch.

(b)

The catalytic force.

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Etymology of 'Catalysis'

Collaborative International Dictionary of English 0.48

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"Catalysis" Quotes from Famous Books

... mentioned the fact, early known to chemists, that many reactions proceed with a marked increase of velocity in presence of many foreign substances. With Berzelius we call this phenomenon "catalysis," by which we understand that general acceleration of reactions which also progress when left to themselves, in the presence of certain bodies which do not change in amount (or only slightly) during the course ...

— Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 1 - "Chtelet" to "Chicago" • Various

... for in order that a cause A. may produce an effect in B. outside of it, cause A. must detach or separate from itself the influence or energy which modifies B." What does the earth detach from itself when it causes a heavy body to fall? In chemical catalysis what does the second body "detach from itself" to produce change in the first, which is changed by its mere presence. The assertion is but partially true, applying only to the transfer of force when one body strikes another. Aristotle has ...

— Buchanan's Journal of Man, September 1887 - Volume 1, Number 8 • Various

... order that a cause A. may produce an effect in B. outside of it, cause A. must detach or separate from itself the influence or energy which modifies B." What does the earth detach from itself when it causes a heavy body to fall? In chemical catalysis what does the second body "detach from itself" to produce change in the first, which is changed by its mere presence. The assertion is but partially true, applying only to the transfer of force when one body strikes another. Aristotle has some thoroughly absurd suggestions on the same ...

— Buchanan's Journal of Man, September 1887 - Volume 1, Number 8 • Various

... that foot-note which you marked with red ink in the book you so kindly gave me on the subject of Catalysis, which did not pertain to the subject of the volume in question, and yet was so illuminative to any student of chemistry. They have done a great deal with Catalysis in Germany with amazing commercial results, but the subject ...

— A Rock in the Baltic • Robert Barr