- having died down or burned out; extinguished: an extinct fire
- no longer active: an extinct volcano
- no longer in existence or use; specif., having no living examples: an extinct species
- that no living person holds or can claim: said of offices, titles, etc.
- no longer spoken as a native language
Origin of extinctMiddle English from Classical Latin extinctus, exstinctus, past participle of exstinguere: see extinguish