rare1. [f. Gr. κατάκλυσμα, -ματος (taken as = κατακλυσμός CATACLYSM) + -IST.] CATACLYSMIST.

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1860.  Maury, Phys. Geog. Sea (Low), xv. § 645. It is manifest, say the cataclysmatists, that, though the two hemispheres do receive annually the same amount of solar heat, [etc.].

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  So Cataclysmatic a. = CATACLYSMAL.

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1883.  Merivale, White Pilgr., 186, Häckel, 29.

        Fast dying out are man’s later appearances,
  Cataclysmitic geologies gone—
Now of Creation completed the clearance is:
  Häckel of J. you must anchor upon.

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1889.  Geo. W. Hale, Æons Ago, in Puck., 6 March, 19.

        But by some sudden glacial cataclysmatic change,
    Oh! the whole Brobdingnaggian troop
Were irrevocably buried in Cenozoic drift,
    And irretrievably lost ‘In the soup.’

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