Activator

2 definitions found

From The Collaborative International Dictionary of English v.0.48 [gcide]:

  activator \activator\ n.
     1. any agency bringing about activation; (Biol.) a molecule
        that increases the activity of an enzyme or a protein that
        increases the production of a gene product in DNA
        transcription.
        [WordNet 1.5]



From WordNet (r) 2.0 [wn]:

  activator
       n : (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 [ant: {inhibitor}]