preheated Get Printable Handwriting Hear It! Say It! Write It! Learn It! Spelling Test Definition verb. to heat before using or processing; to heat the oven and bring it up to temperature before it is needed. Example Sentence She preheated the oven to 375 degrees before baking the cookies. Synonyms heat ; heat before; prepare to bake Antonyms cool down Hear It! Say It! Write It! preheated Switch to cursive Start Share with your friends: