Open English Wordnet
Adjectives
(a)extinct, nonextantno longer in existence; lost or especially having died out leaving no living representatives“an extinct species of fish”,
“an extinct royal family”,
“extinct laws and customs” (a)extinct(of e.g. volcanoes) permanently inactive“an extinct volcano” (s)extinct, outbeing out or having grown cold“threw his extinct cigarette into the stream”,
“the fire is out”