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activator

 
Noun activator has 1 sense
  1. activator - (biology) any agency bringing about activation; a molecule that increases the activity of an enzyme or a protein that increases the production of a gene product in DNA transcription
    --1 is a kind of
    substance, matter
    Antonyms: inhibitor
    --1 has particulars:
     activating agent; catalyst, accelerator; sensitizer, sensitiser
    Derived form: verb activate2
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