void, emptiness, vacuity; space that is empty of matter; electrical device which cleans surfaces by creating air suction
clean with a vacuum cleaner, operate a device for cleaning carpets and floors by air suction
of or pertaining to a vaccum; using a vacuum; producing vacuum
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Vacuum Definition from Arts & Humanities Dictionaries & Glossaries
Vacuum Definition from Language, Idioms & Slang Dictionaries & Glossaries
(n.)
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.
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.
(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.
Webster's Revised Unabridged Dictionary (1913), edited by Noah Porter. AboutA 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.
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.
similar words(15)
torricellian vacuum
vacuum-clean
vacuum pump
vacuum pan
thermionic vacuum tube
vacuum bag
vacuum flask
vacuum gauge
vacuum bottle
vacuum chamber
vacuum brake
vacuum aspiration
vacuum cleaner
vacuum valve
vacuum tube
A space entirely devoid of matter.
Cau = v. to shut, to inclose, n. a hollow, vacuum, a. shut
Gwag = n. avoid, a vacuum, a void, empty, vacant
Noun
1. the absence of matter
(synonym) vacuity
(hypernym) emptiness
2. an empty area or space; "the huge desert voids"; "the emptiness of outer space"; "without their support he'll be ruling in a vacuum"
(synonym) void, vacancy, emptiness
(hypernym) space
3. a region empty of matter
(synonym) vacuity
(hypernym) region, part
4. an electrical home appliance that cleans by suction
(synonym) vacuum cleaner
(hypernym) home appliance, household appliance
(hyponym) Hoover
(part-meronym) dust bag, vacuum bag
(derivation) vacuum-clean, hoover
Verb
1. clean with a vacuum cleaner; "vacuum the carpets"
(synonym) vacuum-clean, hoover
(hypernym) clean, make clean
(derivation) vacuum cleaner
Vacuum Definition from Business & Finance Dictionaries & Glossaries
1. Theoretically, a space that is devoid of all matter and that exerts zero pressure. 2. A condition that exists in a system when pressure is reduced below atmospheric pressure.
Refining - Melting in a vacuum to remove gaseous contaminants from the metal.
Vacuum Definition from Science & Technology Dictionaries & Glossaries
An enclosed area in which the air pressure is below that of the surrounding atmospheric pressure . Also see air-valve carburetor and manifold vacuum .
Any pressure less than atmospheric pressure.
The term denoting a given space that is occupied by a gas at less then atmospheric pressure. For degrees of vacuum, see Vacuum Level.
Vacuum Definition from Encyclopedia Dictionaries & Glossaries
Vacuum is space that is empty of matter. The word stems from the Latin adjective vacuus for "empty". An approximation to such vacuum is a region with a gaseous pressure much less than atmospheric pressure. Physicists often discuss ideal test results that would occur in a perfect vacuum, which they sometimes simply call "vacuum" or free space, and use the term partial vacuum to refer to an actual imperfect vacuum as one might have in a laboratory or in space. The Latin term in vacuo is used to describe an object as being in what would otherwise be a vacuum.
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Vacuum Definition from Religion & Spirituality Dictionaries & Glossaries
Vacuum Emptiness, the necessary correlative of plenum or fullness: the two being one of those pairs of opposites which the mind is bound to postulate as a basis of reasoning. It stands for the spiritual condition of a cosmic hierarchy before it emanates its streams of manifestation -- "the symbol of the absolute Deity or Boundless Space, esoterically" (TG 357). Democritus taught that the first principles are atoms and a vacuum, which is equivalent to the manifest and the unmanifest, deity latent and deity patent, but the atoms of Democritus, being spiritual indivisibles, are not the atoms of science but what in theosophy are called monads, and likewise the vacuum of void of Democritus is the equivalent of the archaic Buddhist sunyata or the ancient Buddhist or Brahmanic arupa (formless) spheres.
The atomo-mechanical theory of physics starts with atoms and a vacuum and then tries to fill the vacuum; here the notion of emptiness has become confused with spatial extension, giving rise to the idea that there can be an extended and measurable void, and raising the difficulty of the transmission of influence across it.
The word is used relatively to signify the absence of something, as the absence of physical matter in an evacuated bulb. But another form of matter is still present, for we can transmit light as well as many other forms of radiation. Thus proceeding by successive steps we come to the logical limit in the conception of the cosmic void -- which nevertheless from the spiritual viewpoint is a pleroma or utter fullness. The physical vacuum of the laboratory has become confused with the scientific and mystical void of the archaic philosophy.
The atomo-mechanical theory of physics starts with atoms and a vacuum and then tries to fill the vacuum; here the notion of emptiness has become confused with spatial extension, giving rise to the idea that there can be an extended and measurable void, and raising the difficulty of the transmission of influence across it.
The word is used relatively to signify the absence of something, as the absence of physical matter in an evacuated bulb. But another form of matter is still present, for we can transmit light as well as many other forms of radiation. Thus proceeding by successive steps we come to the logical limit in the conception of the cosmic void -- which nevertheless from the spiritual viewpoint is a pleroma or utter fullness. The physical vacuum of the laboratory has become confused with the scientific and mystical void of the archaic philosophy.
