›physicsa very short, very fast wave of electromagnetic energy that causes heat in atoms of water and some other substancesmicrowave oven›A microwave or microwave oven is a machine that cooks food quickly using microwaves: Heat up the leftover pizza in the microwave.microwave
/ˈmɑɪ·krəˌweɪv/v[I/T]›[I]Microwave on high for 12 minutes.