# Neptune

> English word · Proper noun · IPA /ˈnɛptjuːn/ · frequency rank #18,140

## Definitions
1. The eighth planet in our solar system, represented in astronomy and astrology by ♆.
2. The god of the ocean and of earthquakes, equivalent to Poseidon in Greek mythology.
3. A township in Monmouth County, New Jersey, United States.
4. An unincorporated community in Mercer County, Ohio.
5. An unincorporated community in Jackson County, West Virginia.
6. An unincorporated community in Ithaca, Richland County, Wisconsin.

## Etymology
From Middle English Neptune, Neptunus, a borrowing from Latin Neptūnus, possibly from Proto-Indo-European *nébʰ-tu-s (“damp, cloudy”) (source of Ancient Greek νέφος (néphos), Sanskrit नभस् (nábhas), etc.), with the sense of "wet, moist."
Puhvel, however, connects it with Proto-Italic *nepōts from Proto-Indo-European *népōts by analogy to Portūnus, cognate with Vedic Apām Napāt and Avestan Apąm Napāt, Child (cf: neve, nephew) of the Water as part of an Indo-European 'Fire in the Water' myth.

## Common misspellings (10)
`enptune`, `nepptune`, `neptnue`, `nepttune`, `neptuen`, `neptunne`, `neputne`, `netpune`, `nneptune`, `npetune`

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/neptune