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The Collaborative International Dictionary
Vacuums

Vacuum \Vac"u*um\, n.; pl. E. Vacuums, L. Vacua. [L., fr. vacuus empty. See Vacuous.]

  1. (Physics) 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.

  2. The condition of rarefaction, or reduction of pressure below that of the atmosphere, in a vessel, as the condenser of a steam engine, which is nearly exhausted of air or steam, etc.; as, a vacuum of 26 inches of mercury, or 13 pounds per square inch.

    Vacuum brake, a kind of continuous brake operated by exhausting the air from some appliance under each car, and so causing the pressure of the atmosphere to apply the brakes.

    Vacuum pan (Technol.), a kind of large closed metallic retort used in sugar making for boiling down sirup. It is so connected with an exhausting apparatus that a partial vacuum is formed within. This allows the evaporation and concentration to take place at a lower atmospheric pressure and hence also at a lower temperature, which largely obviates the danger of burning the sugar, and shortens the process.

    Vacuum pump. Same as Pulsometer, 1.

    Vacuum tube (Phys.), a glass tube provided with platinum electrodes and exhausted, for the passage of the electrical discharge; a Geissler tube.

    Vacuum valve, a safety valve opening inward to admit air to a vessel in which the pressure is less than that of the atmosphere, in order to prevent collapse.

    Torricellian vacuum. See under Torricellian.

Wiktionary
vacuums

n. (plural of vacuum English) vb. (en-third-person singular of: vacuum)

Usage examples of "vacuums".

Some of the characters in my tale are present in the Void Which Bind largely as scars, holes, vacancies -- the Nemes creatures are such vacuums, as are Councillor Albedo and the other Core entities -- but I was able to track some of the movements and actions of these beings simply by the movement of that vacancy through the matrix of sentient emotion that was the Void, much as one would see the outline of an invisible man in a hard rain.

The parasail rippled and tore at the risers as heated air and imploding vacuums battered us.

The high-level vacuums required for them to function safely, let alone efficiently, were becoming ever harder to produce and literally impossible to maintain.

I’ve been trying for ten years to develop an energy field that would at least keep it from infecting the vacuums in the laser units.

For the physicists, conditions were available that had been unattainable or attainable only with great effort: weightlessness, virtually perfect vacuums, temperatures approaching absolute zero.

That sort of thing produces vacuums in high places, and these are not the times for vacuums of any kind.