Chemistry. the causing or accelerating of a chemical change by the addition of a .
an action between two or more persons or forces, initiated by an agent that itself remains unaffected by the action:
social catalyses occasioned by controversial writings.
We call this catalysis, catalytic action, the action of presence, or by what learned name we choose.
Medical Essays Oliver Wendell Holmes, Sr.
We may look upon this process as a special kind of catalysis.
The Wonders of Life Ernst Haeckel
They’ve found the secret of catalysis, and can actually synthesize any catalytic agent they want.
Islands of Space John W Campbell
“I think you can rely upon your powers of catalysis, Dorothy,” he said.
The Vanity Girl Compton Mackenzie
The phenomenon known as “catalysis” is of common occurrence in both inorganic and organic chemistry.
The Chemistry of Plant Life Roscoe Wilfred Thatcher
We should see the building of crystals, catalysis, and the movements of unstable compounds.
The Last Harvest John Burroughs
noun (pl) -ses (-ˌsiːz)
acceleration of a chemical reaction by the action of a catalyst
1650s, “dissolution,” from Latinized form of Greek katalysis “dissolution, a dissolving” (of governments, military units, etc.), from katalyein “to dissolve,” from kata- “down” (or “completely”), see cata-, + lyein “to loosen” (see lose). Chemical sense “change caused by an agent which itself remains unchanged” is attested from 1836, introduced by Swedish chemist Jöns Jakob Berzelius (1779-1848).
catalysis ca·tal·y·sis (kə-tāl’ĭ-sĭs)
n. pl. ca·tal·y·ses (-sēz’)
The action of a catalyst, especially an increase in the rate of a chemical reaction.
a change from one emotion to its opposite, as from hate to love.
the positive plate of an x-ray or other electron tube serving as the target for electrons coming from the , which cause it to emit high-frequency radiations. noun the target electrode for the stream of electrons in a vacuum tube, esp an X-ray tube
broad or wide-ranging in tastes, interests, or the like; having sympathies with all; broad-minded; liberal. universal in extent; involving all; of interest to all. pertaining to the whole Christian body or church. of or relating to a Catholic church, especially the Roman Catholic Church. Theology. (among Roman Catholics) claiming to possess exclusively the notes or […]
the faith, system, and practice of the , especially the . (lowercase) . Contemporary Examples Be in no doubt: the decline of Catholicism in Irish life is chiefly the result of the Church’s own actions. Father Ted: Comedy as Liberation Tom Doran March 7, 2013 Italy has 1.2 million Muslim residents and 20,000 Italians who […]