We call this catalysis, catalytic action, the action of presence, or by what learned name we choose.
We may look upon this process as a special kind of catalysis.
They've found the secret of catalysis, and can actually synthesize any catalytic agent they want.
"I think you can rely upon your powers of catalysis, Dorothy," he said.
The phenomenon known as "catalysis" is of common occurrence in both inorganic and organic chemistry.
We should see the building of crystals, catalysis, and the movements of unstable compounds.
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.