catalyst

n.	1.	(Chem.) a substance that initiates or accelerates a chemical reaction without itself being affected; as, thousands of enzymes serve in concert as calaysts to produce the sequence of reactions we call "life"; the industrial production of cheap ammonia depended on finding a good catalyst.
	2.	something that serves as a precipitating occasion for an event; as, the invasion acted as a catalyst to unite the country.
	3.	something or someone that causes events to happen with itself being changed.

Noun	1.	catalyst - (chemistry) a substance that initiates or accelerates a chemical reaction without itself being affected Synonyms: accelerator Antonyms: anticatalyst - (chemistry) a substance that retards a chemical reaction or diminishes the activity of a catalyst
	2.	catalyst - something that causes an important event to happen; "the invasion acted as a catalyst to unite the country"

agent, agent provocateur, agitator, agitprop, alterant, alterative, alterer, author, begetter, beginner, catalysis, catalytic agent, causer, creator, decay, demagogue, dialysis, dissociation, effector, engenderer, exciter, father, ferment, firebrand, fission, fomenter, generator, goad, hydrolysis, hydrolyst, impetus, impulse, incendiary, incentive, incitation, incitement, inciter, inflamer, innovationist, innovator, inspirer, instigator, introducer, leaven, maker, mischief-maker, modificator, modifier, mother, motivation, mover, originator, parent, photolysis, precursor, prime mover, primum mobile, producer, provocateur, provoker, rabble-rouser, ringleader, rouser, seditionary, seditionist, sire, splitting, spur, stimulant, thermolysis, transformer, transmogrifier, troublemaker, urger, yeast

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