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Noun extinction has 6 senses
  1. extinction, defunctness - no longer in existence; "the extinction of a species"
    --1 is a kind of death
  2. extinction - no longer active; extinguished; "the extinction of the volcano"
    --2 is a kind of
    inaction, inactivity, inactiveness
  3. extinction - the reduction of the intensity of radiation as a consequence of absorption and radiation
    --3 is a kind of
    natural process, natural action, action, activity
    --3 has part: absorption; scattering
  4. extinction, extermination - complete annihilation; "they think a meteor cause the extinction of the dinosaurs"
    --4 is a kind of annihilation, disintegration
    Derived form: verb extinguish4
  5. extinction, experimental extinction - a conditioning process in which the reinforcer is removed and a conditioned response becomes independent of the conditioned stimulus
    --5 is a kind of conditioning
  6. extinction, extinguishing, quenching - the act of extinguishing; causing to stop burning; "the extinction of the lights"
    --6 is a kind of termination, ending, conclusion
    Derived forms: verb extinguish2, verb extinguish1
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