Neptune

noun

Nep·​tune ˈnep-ˌtün How to pronounce Neptune (audio)
-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 adjective

Examples of Neptune in a Sentence

sailors shipwrecked by the wild waves of Neptune
Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Venus’ alignment with Neptune makes a love affair seem fated. Usa Today, USA Today, 2 May 2025 Commitments and romantic affairs are highlighted with Venus conjunct Neptune in your relationship sector, Libra. Valerie Mesa, People.com, 2 May 2025 Some of the strongest evidence that points to the existence of a planet within the outskirts of the solar system is the activity within the Kuiper Belt, an unusual clustering of icy bodies -- including comets and dwarf planets -- which stretches from Neptune and outward toward interstellar space. Julia Jacobo, ABC News, 2 May 2025 For comparison, the outermost planet, Neptune, is 30 AU (2.8 billion miles, or 4.5 billion kilometers) from the sun. Keith Cooper, Space.com, 1 May 2025 See All Example Sentences for Neptune

Word History

Etymology

Latin Neptunus

First Known Use

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

Time Traveler
The first known use of Neptune was before the 12th century

Browse Nearby Words

Cite this Entry

“Neptune.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/Neptune. Accessed 9 May. 2025.

Kids Definition

Neptune

noun
Nep·​tune ˈnep-ˌt(y)ün How to pronounce Neptune (audio)
: the planet eighth in order from the sun see planet
Neptunian adjective

More from Merriam-Webster on Neptune

Last Updated: - Updated example sentences
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