Neptune

noun

Nep·​tune ˈnep-ˌtün 

-ˌtyün

1

a

: the Roman god of the sea compare poseidon

b

: ocean

2

: the planet eighth in order from the sun see Planets Table

Neptunian

nep-ˈtü-nē-ən 

-ˈtyü-

adjective

Synonyms

• blue
• brine
• deep
• ocean
• sea
• seven seas

Examples of Neptune in a Sentence

sailors shipwrecked by the wild waves of Neptune

Recent Examples on the Web

The Portland Press Herald reported that Brackett and Dana share a child, and that Dana had lived with Neptune before 2021. —Esme Mazzeo, Peoplemag, 12 May 2024

Super Earth refers to a planet's size — bigger than Earth but smaller than Neptune. —CBS News, 8 May 2024

Northwestern Auglaize County and east central Mercer County in west central Ohio until 8:45 p.m. Locations affected include Celina, Wapakoneta, St. Marys, Coldwater, Moulton, Buckland, Montezuma, Neptune, Kossuth, State Route 116 at State Route 197, and Bulkhead. —Erin Couch, The Enquirer, 7 May 2024

In the distant future, a mysterious crime unfolds on the lonely Neptune moon of Athos. —Leo Barraclough, Variety, 2 May 2024

Their computer simulations require Planet 9’s gravitational kick to explain how small bits of rock and ice from around Neptune’s orbit end up close to the sun. —Briley Lewis, Popular Science, 2 May 2024

By way of comparison, Jupiter orbits around five AU from the sun and Neptune around 30 AU. —Will Dunham, The Christian Science Monitor, 19 Apr. 2024

Venus and Neptune’s alignment amplifies the psychic nature of a relationship. —USA TODAY, 3 Apr. 2024

Modera Neptune’s hotel and apartments will be in separate buildings sharing a common wall. —Phil Diehl, San Diego Union-Tribune, 31 Mar. 2024

Word History

Etymology

Latin Neptunus

First Known Use

before the 12th century, in the meaning defined at sense 1a

Kids Definition

Neptune

noun

Nep·​tune ˈnep-ˌt(y)ün 

: the planet eighth in order from the sun see planet

Neptunian

nep-ˈt(y)ü-nē-ən 

adjective