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 extinction extinction /ɪkˈstɪŋʃən/

noun

  1. The act of extinguishing; causing to stop burning  ( extinction , extinguishing , quenching )
    the act of extinguishing; causing to stop burning
      The extinction of the lights
    the extinction of the lights
  2. A conditioning process in which the reinforcer is removed and a conditioned response becomes independent of the conditioned stimulus  ( experimental extinction , extinction )
    a conditioning process in which the reinforcer is removed and a conditioned response becomes independent of the conditioned stimulus
  3. Complete annihilation  ( extermination , extinction )
    complete annihilation
      They think a meteor cause the extinction of the dinosaurs
    they think a meteor cause the extinction of the dinosaurs
  4. The reduction of the intensity of radiation as a consequence of absorption and radiation  ( extinction )
    the reduction of the intensity of radiation as a consequence of absorption and radiation
  5. No longer in existence  ( defunctness , extinction )
    no longer in existence
      The extinction of a species
    the extinction of a species
  6. No longer active; extinguished  ( extinction )
    no longer active; extinguished
      The extinction of the volcano
    the extinction of the volcano


 Pelargonium Pelargonium /ˌpɛlɑːrˈgoʊniəm/

noun

  1. Geraniums native chiefly to South Africa; widely cultivated  ( genus Pelargonium , Pelargonium )
    geraniums native chiefly to South Africa; widely cultivated


 killer whale killer whale /ˈkɪlər ˈweɪl/

noun

  1. Predatory black-and-white toothed whale with large dorsal fin; common in cold seas  ( grampus , killer , killer whale , orca , Orcinus orca , sea wolf )
    predatory black-and-white toothed whale with large dorsal fin; common in cold seas


 stria stria /ˈstraɪə/

noun

  1. A stripe or stripes of contrasting color  ( banding , stria , striation , band )
    a stripe or stripes of contrasting color
      Chromosomes exhibit characteristic bands
    chromosomes exhibit characteristic bands
      The black and yellow banding of bees and wasps
    the black and yellow banding of bees and wasps
  2. Any of a number of tiny parallel grooves such as: the scratches left by a glacier on rocks or the streaks or ridges in muscle tissue  ( stria , striation )
    any of a number of tiny parallel grooves such as: the scratches left by a glacier on rocks or the streaks or ridges in muscle tissue
       The rock displayed beautiful striations, formed by years of erosion.
    The rock displayed beautiful striations, formed by years of erosion.


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