Dictionary
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 having ceased eruption; no longer active: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.