- (of an animal or plant species) having no living representative; having died out
- quenched or extinguished
- (of a volcano) no longer liable to erupt; inactive
WordReference Random House Learner's Dictionary of American English © 2026
ex•tinct /ɪkˈstɪŋkt/USA pronunciation
adj.
WordReference Random House Unabridged Dictionary of American English © 2026- Biologyno longer in existence: an extinct species.
- no longer in use; obsolete: an extinct custom.
- no longer active: an extinct volcano.
ex•tinct
(ik stingkt′),USA pronunciation adj.
- Biologyno longer in existence;
that has ended or died out:an extinct species of fish. - no longer in use;
obsolete:an extinct custom. - extinguished;
quenched;
not burning. - having ceased eruption;
no longer active:an extinct volcano.
- Latin ex(s)tinctus put out, quenched, past participle of ex(s)tinguere to extinguish
- late Middle English 1400–50
- 1. defunct, gone, vanished. See dead. 2. archaic. 3. out.
Collins Concise English Dictionary © HarperCollins Publishers::
extinct /ɪkˈstɪŋkt/ adj
'extinct' also found in these entries (note: many are not synonyms or translations):
active
- Akkadian
- Alderney
- amber
- ammonite
- apeman
- Ararat
- archaeopteryx
- aurochs
- australopithecine
- Babylonian
- belemnite
- Beothuk
- blaubok
- British
- bubal
- Chimborazo
- coelacanth
- condor
- Coptic
- Cornish
- defunct
- descend
- die out
- dinosaur
- diprotodon
- disappear
- dodo
- dormant
- Egyptian
- Elamite
- Elbrus
- Elgon
- eohippus
- Erciyes Daği
- extinction
- Fuji
- Gaulish
- glyptodont
- Gothic
- graptolite
- great auk
- Hittite
- hominid
- Homo
- Homo habilis
- Homo sapiens
- Huascarán
- huia
- acanthodian