activator

UK:*UK and possibly other pronunciationsUK and possibly other pronunciations/ˈæktɪˌveɪtəʳ/US:USA pronunciation: respellingUSA pronunciation: respelling(ak′tə vā′tər)


WordReference Random House Unabridged Dictionary of American English © 2025
ac•ti•va•tor  (ak′tə vā′tər),USA pronunciation n. 
  1. a person or thing that activates.
  2. Biochemistry, Chemistry[Chem., Biochem.]a catalyst.
  3. any impurity in a mineral that causes luminescence. Cf. inhibitor (def. 3).
  4. Dentistry[Orthodontics.]a removable appliance, usually of hard plastic, that is worn in the mouth instead of a fixed appliance to help align the teeth and improve the relationship of the lower jaw to the upper.
  • activate + -or2

'activator' also found in these entries (note: many are not synonyms or translations):
TPA - inhibitor - tissue plasminogen activator

Forum discussions with the word(s) "activator" in the title:


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