neptunite

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noun

A black silicate mineral with chemical formula KNa₂Li(Fe²⁺,Mn²⁺)₂Ti₂Si₈O₂₄

OriginEnglish Neptune ← Middle English Neptune ← Old English Neptune →
Scrabble 11
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Meanings

nounneptunite (usually uncountable, plural neptunites)

plural neptunites

  1. uncountableusuallyA black silicate mineral with chemical formula KNa₂Li(Fe²⁺,Mn²⁺)₂Ti₂Si₈O₂₄

Origin

  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. Englishneptunite

From Neptune + -ite.

Full word history & related roots →

Translations

Finnish neptuniitti
  • neptuniittimineral
Cite this entry
APA

neptunite. (n.d.). In WatkinsX Dictionary. Retrieved November 3, 2026, from https://dictionary.watkinsx.com/word/neptunite

MLA

“neptunite.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/neptunite. Accessed November 3, 2026.

Chicago

WatkinsX Dictionary, s.v. “neptunite,” accessed November 3, 2026, https://dictionary.watkinsx.com/word/neptunite.

Source: neptunite on Wiktionary, CC BY-SA 4.0.