Definition of vacuum
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Vacuum (n.) A space entirely devoid of matter (called also, by way of distinction, absolute vacuum); hence, in a more general sense, a space, as the interior of a closed vessel, which has been exhausted to a high or the highest degree by an air pump or other artificial means; as, water boils at a reduced temperature in a vacuum..
Lern More About Vacuum
Leech ::
Leech (n.) A glass tube of peculiar construction, adapted for drawing blood from a scarified part by means of a vacuum..
Cup ::
Cup (n.) A cupping glass or other vessel or instrument used to produce the vacuum in cupping.
Vacuist ::
Vacuist (n.) One who holds the doctrine that the space between the bodies of the universe, or the molecules and atoms of matter., is a vacuum; -- opposed to plenist..
Cupping ::
Cupping (n.) The operation of drawing blood to or from the surface of the person by forming a partial vacuum over the spot. Also, sometimes, a similar operation for drawing pus from an abscess..
Pulsometer ::
Pulsometer (n.) A device, with valves, for raising water by steam, partly by atmospheric pressure, and partly by the direct action of the steam on the water, without the intervention of a piston; -- also called vacuum pump..
Receiver ::
Receiver (n.) The glass vessel in which the vacuum is produced, and the objects of experiment are put, in experiments with an air pump. Cf. Bell jar, and see Illust. of Air pump..
Plenum ::
Plenum (n.) That state in which every part of space is supposed to be full of matter; -- opposed to vacuum.
Vacuum ::
Vacuum (n.) A space entirely devoid of matter (called also, by way of distinction, absolute vacuum); hence, in a more general sense, a space, as the interior of a closed vessel, which has been exhausted to a high or the highest degree by an air pump or other artificial means; as, water boils at a reduced temperature in a vacuum..
Vortex ::
Vortex (n.) A mass of fluid, especially of a liquid, having a whirling or circular motion tending to form a cavity or vacuum in the center of the circle, and to draw in towards the center bodies subject to its action; the form assumed by a fluid in such motion; a whirlpool; an eddy..
Suck ::
Suck (v. t.) To draw, as a liquid, by the action of the mouth and tongue, which tends to produce a vacuum, and causes the liquid to rush in by atmospheric pressure; to draw, or apply force to, by exhausting the air..
Brachystochrone ::
Brachystochrone (n.) A curve, in which a body, starting from a given point, and descending solely by the force of gravity, will reach another given point in a shorter time than it could by any other path. This curve of quickest descent, as it is sometimes called, is, in a vacuum, the same as the cycloid..
Anticathode ::
Anticathode (n.) The part of a vacuum tube opposite the cathode. Upon it the cathode rays impinge.
Bubble ::
Bubble (n.) A globule of air, or globular vacuum, in a transparent solid; as, bubbles in window glass, or in a lens..
Emptiness ::
Emptiness (n.) The state of being empty; absence of contents; void space; vacuum; as, the emptiness of a vessel; emptiness of the stomach..
Gramme ::
Gramme (n.) The unit of weight in the metric system. It was intended to be exactly, and is very nearly, equivalent to the weight in a vacuum of one cubic centimeter of pure water at its maximum density. It is equal to 15.432 grains. See Grain, n., 4..
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