Home›Browse›M›microwave ovenmicrowave ovenOur editors are putting together more complete content — check back in about 20 minutesmicrowave ovenmicrowave oven — nounnoun1. a kitchen appliance that uses microwaves to heat and cook food quickly1.nounDefinitiona kitchen appliance that uses microwaves to heat and cook food quicklyExampleI heated up the leftovers in the microwave oven.