[ UK /ɛkstˈɪŋkʃən/ ]
[ US /ɪkˈstɪŋkʃən, ɪkˈstɪŋʃən/ ]
NOUN
  1. a conditioning process in which the reinforcer is removed and a conditioned response becomes independent of the conditioned stimulus
  2. the reduction of the intensity of radiation as a consequence of absorption and radiation
  3. the act of extinguishing; causing to stop burning
    the extinction of the lights
  4. complete annihilation
    they think a meteor cause the extinction of the dinosaurs
  5. no longer active; extinguished
    the extinction of the volcano
  6. no longer in existence
    the extinction of a species
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How To Use extinction In A Sentence

  • Its population is so small that forecasts put it on the brink of extinction. Times, Sunday Times
  • Pity the turtles and cherish them, for they too are on the conservationist's list of vulnerable species and in danger of extinction.
  • THE international trade in Atlantic blue fin tuna could be banned in a dramatic move to save the fish from extinction. The Sun
  • It is a strange fact that Dionaea, which is one of the most beautifully adapted plants in the vegetable kingdom, should apparently be on the high-road to extinction. Insectivorous Plants
  • Note that several Cambrian and early Ordovician mass extinctions are not shown here.
  • A multispecies overkill simulation of the end-Pleistocene megafaunal mass extinction. Late-Quaternary changes in arctic terrestrial ecosystems, climate, and ultraviolet radiation levels
  • As conscious beings we can deduce that the logical conclusion of this decline is our extinction.
  • Charles Gordon Frazer painted Cannibal Feast to provide an insight into the cannibal civilisations he feared were on the brink of extinction after witnessing the feast while hiding in long grass.
  • At the same time, through uncaring ignorance or malice, they brought about the extinction of numberless species of native flora and fauna.
  • It is believed that predation by non-native red foxes was the primary reason for the extinction of the dusky pademelon on mainland Australia.
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