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English Dictionary: extinction by the DICT Development Group
2 results for extinction
From WordNet (r) 3.0 (2006) [wn]:
  1. no longer active; extinguished; "the extinction of the volcano"
  2. no longer in existence; "the extinction of a species"
    Synonym(s): extinction, defunctness
  3. the reduction of the intensity of radiation as a consequence of absorption and radiation
  4. complete annihilation; "they think a meteor cause the extinction of the dinosaurs"
    Synonym(s): extinction, extermination
  5. a conditioning process in which the reinforcer is removed and a conditioned response becomes independent of the conditioned stimulus
    Synonym(s): extinction, experimental extinction
  6. the act of extinguishing; causing to stop burning; "the extinction of the lights"
    Synonym(s): extinction, extinguishing, quenching
From Webster's Revised Unabridged Dictionary (1913) [web1913]:
   Extinction \Ex*tinc"tion\, n. [L. extinctio, exstinction: cf. F.
      1. The act of extinguishing or making extinct; a putting an
            end to; the act of putting out or destroying light, fire,
            life, activity, influence, etc.
      2. State of being extinguished or of ceasing to be;
            destruction; suppression; as, the extinction of life, of a
            family, of a quarrel, of claim.
No guarantee of accuracy or completeness!
©TU Chemnitz, 2006-2019
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