Activator

Activator may mean:

  • Activator (genetics), a DNA-binding protein that regulates one or more genes by increasing the rate of transcription
  • Activator (proteomics), a type of effector that increases the rate of enzyme mediated reactions
  • Activator (phosphor), a type of dopant used in phosphors and scintillators
  • Sega Activator, a motion-sensing controller for the Sega Mega Drive/Genesis
  • Activator technique, a method of spinal adjustment