activator

2 definitions found

activator - Collaborative International Dictionary of English v.0.48 :

  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]

activator - WordNet (r) 2.1 (2005) :

  activator
      n 1: (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]