Etymology

neptunism

N1E1P3T1U1N1I1S1M3

Today it means: A discredited scientific theory of geology, held by many scientists around the late 18th century and early 19th century, that rocks were formed from the crystallisation of minerals in the early Earth's oceans. Full definition →

English Neptune ← Middle English Neptune ← Old English Neptune
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The story

  1. Proto-Indo-European*nebʰ-
  2. Proto-Indo-European*népōts
  3. Etruscan𐌍𐌄𐌐𐌄𐌕𐌄 (nepete)
  4. Proto-Italic*neptūnos
  5. LatinNeptūnus
  6. Old EnglishNeptune
  7. Middle EnglishNeptune
  8. EnglishNeptune
  9. English todayNeptunism

From Neptune + -ism.

Etymology from Wiktionary, CC BY-SA 4.0.