preheating Get Printable Handwriting Hear It! Say It! Write It! Learn It! Spelling Test Definition verb. to heat an oven or a dish before using it. Example Sentence She started preheating the oven to bake cookies. Synonyms warm up; heat in advance; prewarm Antonyms cool; chill Hear It! Say It! Write It! preheating Switch to cursive Start Share with your friends: