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 extinction extinction /ɪkˈstɪŋʃən/

noun

  1. The act of extinguishing; causing to stop burning  ( extinction , extinguishing , quenching )
    the act of extinguishing; causing to stop burning
     The extinction of the lights
    the extinction of the lights
  2. A conditioning process in which the reinforcer is removed and a conditioned response becomes independent of the conditioned stimulus  ( experimental extinction , extinction )
    a conditioning process in which the reinforcer is removed and a conditioned response becomes independent of the conditioned stimulus
  3. Complete annihilation  ( extermination , extinction )
    complete annihilation
     They think a meteor cause the extinction of the dinosaurs
    they think a meteor cause the extinction of the dinosaurs
  4. The reduction of the intensity of radiation as a consequence of absorption and radiation  ( extinction )
    the reduction of the intensity of radiation as a consequence of absorption and radiation
  5. No longer in existence  ( defunctness , extinction )
    no longer in existence
     The extinction of a species
    the extinction of a species
  6. No longer active; extinguished  ( extinction )
    no longer active; extinguished
     The extinction of the volcano
    the extinction of the volcano