preheating Get Printable Handwriting Hear It! Say It! Write It! Learn It! Spelling Test Definition verb. the action of heating something beforehand. Example Sentence She started preheating the oven to bake cookies. More Example Sentences She is preheating the oven for baking. Synonyms warming; heating up; preparing Antonyms cool; chill Hear It! Say It! Write It! preheating Switch to cursive Start Share with your friends: