Synonyms for Microwave oven:

n.

artifact (noun)
microwave.
microwave oven (noun)
microwave.
oven (noun)
cookery, grill, brick oven, brazier, baker, electric stove, broiler, warmer, stove, roaster, coal stove, boiler, barbecue, toaster, Chafer, microwave, Dutch stove, Dutch Oven, range, electric oven, cooker, oven.

Other synonyms:

Other relevant words:
microwave.