Synonym: defunctness, experimental extinction, extermination, extinguishing, quenching. Similar words: distinction, sanction, function, compunction, and function, functional, malfunction, dysfunction. Meaning: [-kʃn] 
n. 1. no longer in existence 2. no longer active; extinguished 3. the reduction of the intensity of radiation as a consequence of absorption and radiation 4. complete annihilation 5. a conditioning process in which the reinforcer is removed and a conditioned response becomes independent of the conditioned stimulus 6. the act of extinguishing; causing to stop burning.
n. 1. no longer in existence 2. no longer active; extinguished 3. the reduction of the intensity of radiation as a consequence of absorption and radiation 4. complete annihilation 5. a conditioning process in which the reinforcer is removed and a conditioned response becomes independent of the conditioned stimulus 6. the act of extinguishing; causing to stop burning. 
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1. The plant is now in danger of extinction.
2. The breed was on the verge of extinction.
3. Many species are doomed to extinction.
4. Pandas are on the margin of extinction.
5. The species was doomed to extinction.
6. Modern farming methods have led to the total extinction of many species of wild flowers.
7. Through the total fading away and extinction of craving, decay and death, sorrow, lamentation, suffering, grief, and despair are extinguished.
8. The mountain gorilla is on the verge of extinction.
9. The centuries-old ritual seems headed for extinction.
10. Will technology in music drive creativity to extinction?
11. Hundreds of tree species face extinction.
11. Sentencedict.com try its best to gather and make good sentences.
12. They were hunted almost to extinction .
13. These animals are now on the verge of extinction.
14. The creature is on the threshold of extinction.
15. Their traditional way of life seems doomed to extinction.
16. Many species are now threatened with extinction.
17. Mountain gorillas are on the verge of extinction.
18. The condor was in grave danger of extinction.
19. Are whales doomed to extinction?
20. Many endangered species now face extinction.
21. Many wild plants are under threat of extinction.
22. The island's way of life is doomed to extinction.
23. The dormouse in Britain may face extinction if ancient woodland continues to disappear.
24. Conservationists are trying to save the whale from extinction .
25. The loggers say their jobs are faced with extinction because of declining timber sales.
26. An operation is beginning to try to save a species of crocodile from extinction.
27. In the 19th century, inbreeding nearly led to the extinction of the royal family.
28. A comet colliding with the earth may have caused the mass extinction of the dinosaurs.
29. 30 percent of reptiles, birds, and fish are currently threatened with extinction.
30. The society was set up to preserve endangered species from extinction.
More similar words: distinction, sanction, function, compunction, and function, functional, malfunction, dysfunction, distinctive, action, auction, section, fiction, reduction, election, fraction, reaction, infection, selection, objection, direction, prediction, collection, inspection, conviction, reflection, production, attraction, dictionary, connection.