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

But according to a lawsuit against the Neptune Society of Northern California, the trip ended with Vonk floundering in the Bay with a gaping leg wound as the 56-foot Naiad backed up toward him. —Ethan Baron, The Mercury News, 14 Nov. 2024

The waxing crescent Moon in your sign squares off against Saturn and Neptune, opposes Jupiter, and passes through conjunction with Venus. —Jennifer Culp, Them, 1 Nov. 2024

One of the primary reasons some astrophysicists propose there is a planet beyond Neptune has to do with odd orbits. —Emilie Le Beau Lucchesi, Discover Magazine, 6 Nov. 2024

Each time the sharks returned to Neptune Islands after a period away, their behavior went through a sort of reset as their initial time spent near the boats was similar to their first exposure. —Melissa Cristina Marquez, Forbes, 5 Nov. 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