projectiles Get Printable Handwriting Hear It! Say It! Write It! Learn It! Spelling Test Definition plural noun. objects that are thrown or propelled. Example Sentence Rockets are projectiles driven by the forward thrust of hot gases. More Example Sentences Children enjoy launching projectiles for fun. Synonyms missiles; bullets; rockets Antonyms bed Hear It! Say It! Write It! projectiles Switch to cursive Start Share with your friends: