ex·tinct
ik-ˈstiŋ(k)t 
ˈek-ˌstiŋ(k)t
ˈek-ˌstiŋ(k)t
1
a
: no longer burning
b
: no longer active
an extinct volcano
2
: no longer existing
an extinct animal
3
a
: gone out of use : superseded
b
: having no qualified claimant
an extinct title
Synonyms
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
Julia Daye, Sacramento Bee, 31 May 2024
However, at 50% off, grab the Fossil before the deal is extinct.
—Shubham Yewale, PCMAG, 30 May 2024
Morgan Greene, chicagotribune.com, 25 Sep. 2020
The species had gone from extraordinarily populous to extinct in a human life span.
—David Biello, Scientific American, 27 June 2014
See all Example Sentences for extinct 
Adjective
Since 1932, the Pacific pocket mouse population took a massive plunge, eventually presumed to be extinct for 20 years.
—Julia Daye, Sacramento Bee, 31 May 2024
However, at 50% off, grab the Fossil before the deal is extinct.
—Shubham Yewale, PCMAG, 30 May 2024
Verb
Of the native species found in Illinois, the majority fall into a range from threatened to extinct, according to the state’s Department of Natural Resources.
—Morgan Greene, chicagotribune.com, 25 Sep. 2020
The species had gone from extraordinarily populous to extinct in a human life span.
—David Biello, Scientific American, 27 June 2014
See all Example Sentences for extinct
These examples are programmatically compiled from various online sources to illustrate current usage of the word 'extinct.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.
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Cite this Entry
“Extinct.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/extinct. Accessed 6 Jun. 2024.
Copy CitationMedical Definition
extinct
adjective
ex·tinct
ik-ˈstiŋ(k)t
ˈek-ˌ
ˈek-ˌ
: no longer existing : lacking living representatives
extinct prehistoric animals
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