Vacuous

vak′ū-us, adj. empty, void: without intelligence, unexpre ive.— v.t. Vac′uāte , to make empty.— ns. Vacuā′tion ; Vac′uist , one who thinks there are empty spaces in nature; Vacū′ity , emptine : space unoccupied: idlene , listle ne ; Vac′uōle , a very small cavity in the ti ue of organisms; Vac′uousne ; Vac′ūum , vacant or empty space: a space empty or devoid of all matter:— pl. Vac′ūa ; Vac′ūum-brake , a brake working on the principle of keeping up a vacuum in a continuous pipe or pipes extending under the train, and in brake-cylinders connected to them under each vehicle, the air being sucked out by ejectors or pumps on the locomotive; Vac′ūum-gauge , a gauge for indicating to what extent a vacuum is produced; Vac′ūum-pan , a ve el for boiling saccharine juices in a partial vacuum in sugar-making; Vac′ūum-tube , a sealed gla tube in which a vacuum has been made, employed to examine the effects of a discharge of electricity through air or gas rarefied or exhausted. [L. vacuus , empty.]