I. “+ˌ- noun
Etymology: micr- + wave
: a very short electromagnetic wave: as
a. : a wave of less than ten meters in wavelength
b. : a wave between 100 centimeters and one centimeter in wavelength
II. transitive verb
: to transmit by means of microwaves
III. noun
or microwave oven
: an oven in which food is cooked by the heat produced as a result of microwave penetration of the food
IV. transitive verb
: to cook or heat in a microwave oven