activator

noun

ac·​ti·​va·​tor ˈak-tə-ˌvāt-ər How to pronounce activator (audio)
1
: a substance (as a chloride ion) that increases the activity of an enzyme compare coenzyme
2
: a substance given off by developing tissue that stimulates differentiation of adjacent tissue
also : a structure giving off such a stimulant

Dictionary Entries Near activator

Cite this Entry

“Activator.” Merriam-Webster.com Medical Dictionary, Merriam-Webster, https://www.merriam-webster.com/medical/activator. Accessed 28 Mar. 2024.

More from Merriam-Webster on activator

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!