GNU Collaborative International Dictionary of English

Found 2 definitions

1.       
   Extinct , a. [L. extinctus, exstinctus, p. p. of extinguere, exstinguere. See Extinguish.]
   Extinguished; put out; quenched; as, a fire, a light, or a lamp, is extinct; an extinct volcano.
   1913 Webster
   Light, the prime work of God, to me is extinct.
   Milton.
   
   1913 Webster
   Without a survivor; without force; dead; as, a family becomes extinct; an extinct feud or law.
   1913 Webster
   Specifically: Once existing as a species but now having no living members; -- used of species of living organisms, especially of animals and plants; as, dinosaurs are now extinct; the dodo bird is extinct.
   PJC
         
       

2.       
   Extinct, v. t. To cause to be extinct. [Obs.]
   Shak.
   
   1913 Webster