Solve the servant's problem

Find the meaning of Bold words.

The worlds of science-fiction abound with wonders. Yet modern technology progresses so rapidly that what may be today's wild dream may be next year's kitchen appliance. A British scientist has prognosticated that within ten years every suburban matron will have her own robot servant. One task this domesticated automaton will not have to contend with will be scouring the oven because even today the newest ranges can be "programed" to reduce their own baked-on grime to easily disposed of ashes.

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