Meaning of extinct

ex•tinct

Pronunciation: (ik-stingkt'), [key]
— adj.
  1. no longer in existence; that has ended or died out: an extinct species of fish.
  2. no longer in use; obsolete: an extinct custom.
  3. extinguished; quenched; not burning.
  4. having ceased eruption; no longer active: an extinct volcano.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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