Search Dictionary
Definition of planet

planet

/ˈplæn.ɪt/
plan · et

Plural:planets
•
Adjective:planetary
JUMP TO:

planet Lexical Profile

planet Game Scores & Validity

• noun

1

A large celestial body that orbits a star, is sufficiently massive to be rounded by its own gravity, and has cleared its orbital path of other significant debris.

Example

"Astronomers recently discovered a rocky exoplanet orbiting a distant dwarf star in the habitable zone."


2

The Earth, especially in the context of its global environment, natural ecosystems, and inhabitants (usually preceded by 'the').

Example

"We must reduce our carbon emissions to ensure a habitable planet for future generations."


3

In historical astronomy and astrology, any of the celestial bodies considered to influence human affairs and terrestrial events, which originally included the sun and moon.

Example

"Ancient astrologers believed that the positions of the planets at the exact moment of birth shaped a person's destiny."

Synonyms
View all synonyms for planet

• Rhymes for planet

Word Origin & Etymology

From Middle English 'planete', via Old French and Late Latin from Greek 'planētēs' meaning 'wanderer', as ancient astronomers observed these celestial bodies wandering across the sky relative to the fixed background stars.

Usage Trend

Historical frequency of usage in published text.

180019102020

Cite this Entry


Wordmom. (2026). Definition of Planet. In Wordmom Dictionary. Retrieved Nov 7, 2026, from https://wordmom.com/dictionary/planet
Built for writers, students, and competitive word game players, Wordmom combines an uncluttered English dictionary and thesaurus with fast, pattern-based word finders so you can verify definitions, synonyms, and high-scoring tile plays in one place.
Dictionary & Reference
© 2016–2026 Wordmom Network. All rights reserved. Made with for word lovers everywhere.
Disclaimer: SCRABBLE® is a registered trademark. All intellectual property rights in and to the game are owned in the U.S.A. and Canada by Hasbro Inc., and throughout the rest of the world by J.W. Spear & Sons Limited of Maidenhead, Berkshire, England, a subsidiary of Mattel Inc. Mattel and Spear are not affiliated with Hasbro. Words With Friends® is a registered trademark of Zynga Inc. Wordle® is a registered trademark of The New York Times Company. Other referenced game titles and tournament lexicon codes (including NASPA NWL and WESPA/HarperCollins CSW) are trademarks of their respective owners. Wordmom is an independent reference utility for educational and entertainment purposes and is not affiliated with, sponsored by, or endorsed by Hasbro, Mattel, Spear, Zynga, The New York Times Company, NASPA, WESPA, or HarperCollins Publishers. All game names are referenced strictly under nominative fair use to indicate compatibility.