micrometeoroid Get Printable Handwriting Hear It! Say It! Write It! Learn It! Spelling Test Definition noun. a tiny particle from space that is smaller than a meteoroid. Example Sentence The astronaut's suit was designed to withstand the impact of a micrometeoroid. Synonyms space dust; cosmic dust; interplanetary dust Antonyms meteor; asteroid Hear It! Say It! Write It! micrometeoroid Switch to cursive Start Share with your friends:
