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1. Dictionary

   ex·tinc·tion

   /ikˈstiNG(k)SH(ə)n/

   noun

   • 1. the fact or process of a species, family, or other group of animals or plants becoming extinct: "preventing the extinction of this unique frog will require the restoration of ponds and surrounding habitats"
   • ▪ the process of a particular thing ceasing to exist: "he joined the chorus of those predicting the extinction of newsprint"
   • ▪ the wiping out of a debt: "a private debt extinction fund"
   • 2. reduction in the intensity of light or other radiation as it passes through a medium or object, due to absorption, reflection, and scattering: "ultraviolet extinction"

   Word Origin late Middle English: from Latin exstinctio(n-), from exstinguere ‘quench’ (see extinguish).

   Scrabble Points: 19

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2. dictionary.cambridge.org › dictionary › englishEXTINCTION | English meaning - Cambridge Dictionary

   dictionary.cambridge.org › dictionary › english

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   a situation in which something no longer exists: extinction of The extinction of the dinosaurs occurred millions of years ago. in danger of extinction Many species of plants and animals are in danger of extinction (= being destroyed so that they no longer exist).

3. www.merriam-webster.com › dictionary › extinctionExtinction Definition & Meaning - Merriam-Webster

   www.merriam-webster.com › dictionary › extinction

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   The meaning of EXTINCTION is the act of making extinct or causing to be extinguished. How to use extinction in a sentence.

4. www.britannica.com › science › extinction-biologyExtinction | Definition & Examples | Britannica

   www.britannica.com › science › extinction-biology

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   Jul 1, 2024 · Extinction, in biology, is the dying out or extermination of a species. It occurs when species are diminished because of environmental forces (natural or human-made) or because of evolutionary changes in their members. Learn more about mass extinctions and modern extinctions.

5. www.dictionary.com › browse › extinctionEXTINCTION Definition & Meaning | Dictionary.com

   www.dictionary.com › browse › extinction

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   the fact or condition of being extinguished or extinct. suppression; abolition; annihilation: the extinction of an army. Biology. the act or process of becoming extinct; a coming to an end or dying out: the extinction of a species. Psychology. the reduction or loss of a conditioned response as a result of the absence or withdrawal of reinforcement.

6. en.wikipedia.org › wiki › ExtinctionExtinction - Wikipedia

   en.wikipedia.org › wiki › Extinction

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   Extinction is the termination of a taxon by the death of its last member. A taxon may become functionally extinct before the death of its last member if it loses the capacity to reproduce and recover. Because a species' potential range may be very large, determining this moment is difficult, and is usually done retrospectively.

7. dictionary.cambridge.org › dictionary › englishEXTINCT | English meaning - Cambridge Dictionary

   dictionary.cambridge.org › dictionary › english

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   EXTINCT definition: 1. not now existing: 2. An extinct volcano is one that is not now active (= will not explode…. Learn more.

8. www.oxfordlearnersdictionaries.com › english › extinctionextinction noun - Definition, pictures, pronunciation and usage...

   www.oxfordlearnersdictionaries.com › english › extinction

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   a situation in which a plant, an animal, a way of life, etc. stops existing. a tribe threatened with extinction/in danger of extinction. The island's way of life is doomed to extinction. The mountain gorilla is on the verge of extinction.