English edit

Etymology edit

Neptune +‎ -ist

Noun edit

Neptunist (plural Neptunists)

  1. A proponent of Neptunism.
    • 2018, Tim Flannery, Europe: A Natural History, page 74:
      The opposing Neptunists, who counted Goethe among their number, believed that the Earth was originally covered in ocean, and that all rocks originated as deposits on the floors of ancient seas.

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