Grade 3 planets Get Printable Handwriting Rhymes Hear It! Say It! Write It! Learn It! Spelling Test Definition noun. any celestial body other than comets or satellites that revolves around a star Example Sentence There are nine known planets. Synonyms Earth; Mars; Saturn Antonyms star Hear It! Say It! Write It! planets Switch to cursive Start Rhymes Two Syllable Rhymes (3) gannett's planet's planets Share with your friends: