Etymology Explorer › English

Where does “Neptune” come from?

Neptune derives from Latin Neptunus, from Proto-Indo-European nébʰos, meaning cloud or mist, with the agent suffix -os.

Neptune (English): eighth planet in the solar system

Definitions

  1. eighth planet in the solar system

Ancestry of “Neptune”, step by step

StepLanguageWordMeaning
1Middle EnglishNeptune—
2LatinNeptūnus—
3Proto-Italicneptūnos—
4Proto-Indo-Europeannébʰoscloud; mist, moisture
5Proto-Indo-European-osCreates action nouns or result nouns from verbs;...

Words derived from “Neptune”

  • neptunium
  • Neptunist
  • Neptunism
  • neptunite
  • dineptunium
  • Neptunicentric
  • neptunate
  • neptūnijs
  • Néʼtoon
  • neptunium
Every word from Proto-Indo-European -os →