microwave oven /ˈmaɪkɹə(ʊ)ˌweɪv ˈʌv(ə)n/ noun1 •An oven that uses microwave-frequency energy to heat food or other items placed within it.We got to install microwave ovens, custom kitchen deliveries. We got to move these refrigerators, we got to move these color TVs. — 1985 formsmicrowave ovens