extinct meaning and definition

EXTINCT adjective

Definition of extinct (adjective)

1. no 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"
   • synonyms: nonextant
   • antonym: extant
2. (of e.g. volcanos) permanently inactive
   • "an extinct volcano"
   • antonym: active
3. being out or having grown cold
   • "threw his extinct cigarette into the stream"; "the fire is out"
   • synonyms: out