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microwave British & World English

An electromagnetic wave with a wavelength in the range 0.001-0.3 m, shorter than that of a normal radio wave but longer than those of infrared radiation. Microwaves are used in radar, in communications, and for heating in microwave ovens and in various industrial processes

microwave-safe British & World English

Designating containers, utensils, etc., made of materials suitable for use in a microwave oven.

microwave background British & World English

A weak uniform microwave radiation which is detectable in nearly every direction of the sky. It is believed to be evidence of the Big Bang

microwave oven in microwave British & World English

An oven that uses microwaves to cook or heat food