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GRE Multiple Choice Questions - List 4

GRE - Flashcards - Multiple Choice Questions - SHOW ME LIST 4

Definition:

(noun) something that causes an important event to happen; "the invasion acted as a ####### to unite the country"

(noun) (chemistry) a substance that initiates or accelerates a chemical reaction without itself being affected

 

** Please Select the best Word that fits the definition in the left column

BURGEON
CABAL
CASTIGATION
CATALYST
CENTURION