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

On Saturday, before sunrise, people will get to see Jupiter, Mercury, Uranus, Mars, Neptune and Saturn, align in the sky, Preston Dyches, a public engagement specialist for NASA's Jet Propulsion Laboratory, previously told USA TODAY. —Julia Gomez, USA TODAY, 27 June 2024

At last, the trail descended to Kings Beach, where bulbous heads of seaweed bobbed between enormous boulders in the water — like Neptune’s bathtub. —Tony Perrottet, Travel + Leisure, 25 June 2024

The summer kickoff event brings together marching bands, dancing groups, mechanized floats and thousands of people decked out as fantastical sea creatures—two of whom are crowned King Neptune and Queen Mermaid. —Ella Feldman, Smithsonian Magazine, 24 June 2024

Remember, with Saturn and Neptune stationing retrograde shortly after, you're also being encouraged to reassess your routines and reflect on your habits. —Valerie Mesa, Peoplemag, 21 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