adjective

1. designating or of that part of the electromagnetic spectrum associated with the larger infrared waves and the shorter radio waves: used for radar, communications, etc. and generally regarded as from 300,000 to 300 megahertz
2. designating an oven that cooks quickly by causing microwaves to penetrate the food, generating internal heat
3. designed, packaged, etc. for cooking in a microwave oven microwave cookware, microwave popcorn

transitive verb microwaved -·waved′, microwaving -·wav′·ing

noun

1. any electromagnetic wave of microwave frequency
2. a microwave oven