Without a survivor; without force; dead; as, a family becomes extinct; an extinct feud or law.

Once existing as a species but now having no living members; -- used of species of living organisms, especially of animals and plants; as, dinosaurs are now extinct; the dodo bird is extinct.

A species which no longer exists. The Stellar sea cow is an example of a species which once lived on the Pacific's East Coast and is now extinct.

When an animal species dies out this is known as extinction. Dinosaurs have become extinct. Ferns A non-flowering plant very plentiful during the Mesozoic Era.

Extinguished; put out; quenched; as, a fire, a light, or a lamp, is extinct; an extinct volcano.

synonyms end eradicate exterminate extinguish kill obsolete outdated stop terminate

of e.g. volcanos; permanently inactive; "an extinct volcano"

A volcano that is not expected to erupt again.