ac·​ti·​va·​tor ˈak-tə-ˌvāt-ər How to pronounce activator (audio)
: a substance (as a chloride ion) that increases the activity of an enzyme compare coenzyme
: a substance given off by developing tissue that stimulates differentiation of adjacent tissue
also : a structure giving off such a stimulant

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Cite this Entry

“Activator.” Medical Dictionary, Merriam-Webster, Accessed 3 Mar. 2024.

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