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

All trademarks are the property of their respective owners. * GMAT™ is a registered trademark of the Graduate Management Admission Council™. The Graduate Management Admission Council™ does not endorse, nor is it affiliated in any way with the owner or any content of this web site. * GRE® is a registered trademark of Educational Testing Service (ETS). This website is not endorsed or approved by ETS. * SAT® is a registered trademark of the College Entrance Examination Board, which was not involved in the production of, and does not endorse, this web site.