1. Definition: 1. establish the validity of something, as by an example, explanation or experiment; "The experiment demonstrated the instability of the compound"; "The mathematician showed the validity of the conjecture"

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1. Definition: 1. the state of nonexistence

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1. Definition: 1. an electrical home appliance that cleans by suction

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1. Definition: 1. give a certain impression or have a certain outward aspect;

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1. Definition: 1. the belief in magical spells that harness occult forces or evil spirits to produce unnatural effects in the world

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1. Definition: 1. an empty area or space; "the huge desert voids"; "the emptiness of outer space"; "without their support he'll be ruling in a vacuum"

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1. Definition: 1. one who practices magic or sorcery

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1. Definition: 1. the quality possessed by something that is unreal

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