extinct

adjective
ex·​tinct | \ ik-ˈstiŋ(k)t, ˈek-ˌstiŋ(k)t \

Definition of extinct

 (Entry 1 of 2)

1a : no longer burning
b : no longer active an extinct volcano
2 : no longer existing an extinct animal
3a : gone out of use : superseded
b : having no qualified claimant an extinct title

extinct

verb
extincted; extincting; extincts

Definition of extinct (Entry 2 of 2)

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Synonyms & Antonyms for extinct

Synonyms: Adjective

bygone, bypast, dead, defunct, departed, done, expired, gone, nonextant, vanished

Antonyms: Adjective

alive, existent, existing, extant, living

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Examples of extinct in a Sentence

Adjective

Many of these old traditions have since become extinct. a few overgrown ruins are all that remain of that once mighty but now extinct civilization

Recent Examples on the Web: Adjective

During his lifetime, spent almost entirely in captivity, Sudan's subspecies went extinct in the wild because of habitat degradation and poaching. Ernie Mastroianni, Discover Magazine, "Discover's Images of the Year 2018," 20 Dec. 2018 His 30-year research partner, University of California Berkeley professor Walter Alvarez, first theorized that dinosaurs became extinct 66 million years ago when a giant meteor slammed into the Earth. Katherine Long, The Seattle Times, "UW’s new provost plumbs one of Earth’s most fascinating mysteries," 22 Oct. 2018 Some populations might have become isolated, and some might have become extinct. Jason Daley, Smithsonian, "Oldest Stone Tools Outside Africa Unearthed in China," 12 July 2018 BBC News notes that the title became extinct after his son, who inherited the title, died. Megan Friedman, Harper's BAZAAR, "William, Kate, Harry, and Meghan All Have Different Titles in Scotland," 5 July 2018 Bringing back animals that became extinct even 20 years ago is a challenge that is beyond us for now, Benton says. National Geographic, "Could Humans and Dinosaurs Coexist? Here's the Science.," 22 June 2018 Without conservation efforts, Pagel said, the species could become extinct within 10 years. Jan Hefler, Philly.com, "Endangered penguins splash it up in new digs at Camden's Adventure Aquarium," 16 May 2018 Great auks went extinct in the mid-19th century, but their Welsh name lives on, forever associated with a completely unrelated bird. Gemma Tarlach, Discover Magazine, "20 Things You Didn't Know About ... Penguins," 6 Nov. 2018 Apple is no longer selling the iPhone X or the iPhone SE and 6s, which means iPhones with headphone jacks are now extinct. Araceli Cruz, Teen Vogue, "iPhone X No Longer Available on Apple’s Website," 13 Sep. 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'extinct.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of extinct

Adjective

15th century, in the meaning defined at sense 1a

Verb

15th century, in the meaning defined above

History and Etymology for extinct

Adjective

Middle English, from Latin exstinctus, past participle of exstinguere

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Statistics for extinct

Last Updated

19 Jan 2019

Look-up Popularity

Time Traveler for extinct

The first known use of extinct was in the 15th century

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More Definitions for extinct

extinct

adjective

English Language Learners Definition of extinct

: no longer existing

: no longer active

extinct

adjective
ex·​tinct | \ ik-ˈstiŋkt \

Kids Definition of extinct

1 : no longer active an extinct volcano
2 : no longer existing Dinosaurs are extinct.

extinct

adjective
ex·​tinct | \ ik-ˈstiŋ(k)t, ˈek-ˌ \

Medical Definition of extinct

: no longer existing : lacking living representatives extinct prehistoric animals

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More from Merriam-Webster on extinct

Thesaurus: All synonyms and antonyms for extinct

Spanish Central: Translation of extinct

Nglish: Translation of extinct for Spanish Speakers

Britannica English: Translation of extinct for Arabic Speakers

Comments on extinct

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