catalyst
/ˈkætəlɪst/ noun [C]Definition
› someone or something that causes a big change: the catalyst behind sth The catalyst behind this welcome trend has been the mighty Bill Gates.catalyst for sth An outside leader is often needed to serve as a catalyst for change.a catalyst to (do) sth The Government will act as a catalyst to promote creative collaboration between businesses.
(Definition of catalyst noun from the Cambridge Business English Dictionary
© Cambridge University Press)
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