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

Your Libra moon is also involved in a harsh T-square with Jupiter, Neptune, Uranus, and your Capricorn rising. —Roya Backlund, StyleCaster, 14 June 2024

On August 25, 1989, the ship flew by Neptune, discovering two new moons, five fine rings, and an Earth-sized bruise in the atmosphere, known as the Great Dark Spot—a mammoth storm, where winds reach 1,000 miles per hour. —Jeffrey Kluger, TIME, 12 June 2024

On March 26, someone who purchased a Mega Millions ticket at a ShopRite in Neptune Township made history by winning the biggest-ever lottery prize awarded to a New Jersey player: a mind-blowing $1.13 billion jackpot. —Muri Assunção, New York Daily News, 11 June 2024

Still, tread cautiously on June 16 as Venus squares Neptune, and your ideals cloud the reality of a situation. —Valerie Mesa, Peoplemag, 7 June 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