extinct Meaning, Definition & Usage

  1. adjective no longer in existence; lost or especially having died out leaving no living representatives
    nonextant.
    • an extinct species of fish
    • an extinct royal family
    • extinct laws and customs
  2. adjective (of e.g. volcanos) permanently inactive
    • an extinct volcano
  3. adjective satellite being out or having grown cold
    out.
    • threw his extinct cigarette into the stream
    • the fire is out

WordNet

Ex*tinct" adjective
Etymology
L. extinctus, exstinctus, p. p. of extinguere, exstinguere. See Extinguish.
Definitions
  1. Extinguished; put out; quenched; as, a fire, a light, or a lamp, is extinct; an extinct volcano.
    Light, the prime work of God, to me is extinct. Milton.
  2. Without a survivor; without force; dead; as, a family becomes extinct; an extinct feud or law.
Ex*tinct" transitive verb
Definitions
  1. To cause to be extinct. Obs. Shak.

Webster 1913