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extinct

adj.
US //ɪkˈstɪŋkt// UK //ɛkstˈɪŋkt// ex·tinct
  1. 1 species/groups (adj.)
    B2 Upper Intermediate Science

    describing a type of animal or plant that has no living members left.

    having no living representatives; used of a species, family, or other larger group of organisms.

    Example

    The dodo is a famous example of a bird that became extinct because of hunting.

    Example

    Biologists estimate that thousands of undocumented species become extinct every decade due to rapid habitat loss in tropical rainforests.

  2. 2 volcanoes (adj.)
    B2 Upper Intermediate Science

    describing a volcano that is no longer active and is not expected to erupt again.

    no longer active or erupting; specifically used of volcanoes that have not erupted in recorded history and are unlikely to do so again.

    Example

    The hikers climbed to the top of the extinct volcano to see the lake inside.

    Example

    Unlike dormant peaks which may eventually wake, an extinct volcano shows no seismic activity and its magma supply has been cut off for millennia.

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  1. 3 laws/customs (adj.)
    C1 Advanced Formal Law

    no longer in use or no longer existing, like an old law or a way of life.

    no longer in existence, operation, or use; applied to titles, legal rights, or cultural practices.

    Example

    The lawyer explained that the old property right was now extinct.

    Example

    The peerage became extinct upon the death of the tenth duke, as he left no male heirs to inherit the title.

  2. 4 fire/light (adj.)
    C2 Proficiency Archaic Literary

    no longer burning or shining.

    extinguished or quenched; no longer alight.

    Example

    The fire was now extinct, leaving only cold grey ashes in the hearth.

    Example

    He stared into the extinct embers of the campfire, feeling a loneliness as deep as the surrounding woods.

Etymology 1

From Late Middle English extinct (“eliminated, eradicated, extinguished”), from Latin extīnctus, exstīnctus (“extinguished, quenched; destroyed, killed; made extinct”), the perfect passive participles of extinguō, exstinguō (“to extinguish, put out, quench; (figurative) to abolish; to destroy, kill”), from ex- (prefix meaning ‘away; out’) + stinguō (“to extinguish, put out, quench”) (from Proto-Indo-European *stengʷ- (“to push”)). The Middle English word displaced Middle English aqueint, aquenched (“extinct; extinguished”). Doublet of extinguish.

Etymology 2

From Middle English extincten (“to extinguish or put out (a fire, light, etc.); to destroy, kill; (figurative) to suppress (an uprising); (law) to quash or stop (legal proceedings); to cancel (a privilege, title, etc.); (medicine) to eliminate or reduce (inflammation, an ulcer, etc.)”), from extinct (adjective) (see etymology 1) + -en (suffix forming the infinitive of verbs).

Etymology 3

Either: * from Latin extīnctus, exstīnctus, a noun use of the perfect passive participle of extinguō, exstinguō (see etymology 1); or * from the verb (see etymology 2).

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