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vacuum bottle a bottle or flask with a vacuum between its double walls which helps to sustain the original temperature of the contents; thermos.
vacuum cleaner an electrical appliance that cleans floors, carpets, rugs, and upholstery by means of suction.
vacuum tube an electron tube, formerly used in radio and electronics, from which the air has been evacuated, enabling electrons to move freely within the vacuum.
vacuum-packed packed in a container from which as much of the air as possible has been removed before sealing.
vacuum-sealed of or relating to a packaged material that has had all the air removed.