Extinct definitions

ĭk-stĭngkt'
No longer existing or living.

An extinct species.

adjective
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No longer burning or active.

An extinct volcano.

adjective
27
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No longer in existence or use; specif., having no living examples.

An extinct species.

adjective
27
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No longer in use.

An extinct custom.

adjective
24
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That no living person holds or can claim.
adjective
24
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No longer spoken as a native language.
adjective
21
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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.
12
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No longer active or burning, as an extinct volcano.
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The definition of extinct is someone or something that has burned out, is no longer in use or no longer exists.

An example of extinct is a volcano that is no longer erupting.

An example of extinct is an old marriage custom in an African tribe.

An example of extinct is dinosaurs.

adjective
7
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(dated) Extinguished, no longer alight (of fire, candles etc.)

Poor Edward's cigarillo was already extinct.

adjective
1
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No longer in existence; having died out.

The dinosaurs have been extinct for millions of years.

adjective
1
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Having died down or burned out; extinguished.

An extinct fire.

adjective
0
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No longer active.

An extinct volcano.

adjective
0
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(volcanology) No longer actively erupting.

Most of the volcanos on this island are now extinct.

adjective
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Origin of extinct

Recorded since 1432; from Latin extinctus, the past participle of extinguere (“to put out, destroy, abolish, extinguish”), corresponding to ex- + stinguere (“to quench”)