easy
Earth is the planet where we live.
What does Planet mean?
a large, nearly round object that travels around a star.
Dictionary definition
A large, nearly round object in space that travels around a star and does not produce light the way a star does.
Example sentences
Planet in a sentence
medium
Each planet in our solar system travels around the Sun.
hard
Astronomers study a planet's orbit, atmosphere, and surface to learn what it is like.
Writing practice
Ready to write your own? Study the examples, then practice planet in a sentence with Sentence Builder checklist feedback.
Quick practice
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Practice the meaning of Planet
Answer three quick questions about its meaning and related words.
Question 1 of 3
Practice 1
What is a planet?
A planet is a large, nearly round object that orbits a star.
Practice 2
Which sentence uses planet correctly?
Mars is one of the planets in our solar system.
Practice 3
Choose the best word: The adjective _____ means related to planets.
Planetary describes something related to a planet or planets.
Practice complete
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You completed 3 questions.
Pronunciation coach
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Planet
Voice settings
Sounds like
plan · it · strongest beat: plan
Tap each sound part, then blend the whole word together.
Learn
WordPlanet.
Partnoun.
MeaningPlanet means a large, nearly round object that travels around a star.
ExampleExample: Earth is the planet where we live.
Word breakdown
2 syllables. Say each part, then blend the word.
- Syllables
- plan · it
- Strongest beat
- plan
- Ending
- it
- Tip
- Put a little extra energy on plan.
Your turn
Say Planet
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Nice work—you practiced planet.
Synonyms
Words like Planet
worldA close synonym when planet means a world such as Earth or Mars.
celestial bodyA broader science term that includes planets as well as other natural objects in space.
Antonym review
Does Planet have an opposite?
Planet names a kind of astronomical object and has no direct antonym. Stars and moons are different objects, not opposites.
Synonym practice
Want to practice planet synonyms in context? Try a Synonym Search question like "The blue planet looked bright in the picture," then compare close word choices. Practice planet synonyms.
Word family
Planet word family
Base word
planet
noun
planets
More than one planet.
adjective
planetary
Related to a planet or planets.
adjective
planetwide
Extending across an entire planet.
Related words
Explore related words
Student support
Understand Planet
Hint for students
A planet is nearly round and travels around a star.
Common mix-up
A planet is not a star. Stars produce light and energy, while planets orbit stars and mainly reflect their light.
Try it in class or at home
Students sort cards describing planets, stars, and moons. For every card, they identify the decisive clue—what it orbits, whether it produces light, and whether it is a natural satellite—then create a definition card for planet.
Teacher prompt
What features make Earth a planet rather than a star or moon? Use round, orbit, star, and light in your explanation.
Word Wheel · Grades 1–3
Practice with the Grades 1–3 Space Words Wheel
Spin this foundational Space Words wheel to review familiar objects, exploration tools, meanings, and sentence connections.
Learning activities
Practice Planet and explore more word games
Cards labelled “Practice PLANET” keep this word in focus. Explore cards open games with other words.
Practice PLANET
Sentence Builder
Write your own sentence with this word and revise with checklist feedback.
Write a sentence with PLANET
Explore · Spelling
Spell Hive
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Explore · Definitions
Define the Word Hive
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Practice definitions
Explore · Matching
Vocabulary Match
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Match meanings
Explore · Context
Context Clue Challenge
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Use context clues
Explore · Scramble
Scrambled Bees
Rebuild words from mixed-up letters for spelling practice.
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