1. defunct, gone, vanished. See dead. 2. archaic. 3. out.
Examples from the web for extinct
In America, 53 languages have become extinct since 1950, more than in any other country.
For nearly two centuries, people have struggled to imagine what the great extinct dinosaurs looked like.
Fully prepared to overthrow everything on the planet in 1968, they were nearly all extinct by 1970.
The new work marks the first time that so much of the genetic material of an extinct creature has been retrieved.
Several of these species are thought to possibly be extinct or are so rare that little data exists about them.
For nearly 200 years, anthropologists and historians considered the Matinecock extinct.
What I found particularly interesting was the prediction that various words will "become extinct" within a specific time period.
He insists he's seen mammoths there, but everyone knows mammoths are extinct.
Today, antigravity research is an all-but-extinct field of study that has devolved into little more than science-fiction fantasy.
Half are expected to be extinct by the end of the century.
British Dictionary definitions for extinct
extinct
/ɪkˈstɪŋkt/
adjective
1.
(of an animal or plant species) having no living representative; having died out
2.
quenched or extinguished
3.
(of a volcano) no longer liable to erupt; inactive
4.
void or obsolete: an extinct political office
Word Origin
C15: from Latin exstinctus quenched, from exstinguere to extinguish
Word Origin and History for extinct
adj.
early 15c., from Latin extinctus/exstinctus, past participle of extinguere/exstinguere (see extinguish). Originally of fires; the sense of the condition of "dying out" of a family or a hereditary title, 1580s; of species by 1768. Cf. extinction.
extinct in Science
extinct
(ĭk-stĭngkt')
Having no living members. Species become extinct for many reasons, including climate change, disease, destruction of habitat, local or worldwide natural disasters, and development into new species (speciation). The great majority of species that have ever lived—probably more than 99 percent—are now extinct.
No longer active or burning, as an extinct volcano.