vacuum
n.
void, emptiness, vacuity; space that is empty of matter; electrical device which cleans surfaces by creating air suction
v.
clean with a vacuum cleaner, operate a device for cleaning carpets and floors by air suction
adj.
of or pertaining to a vaccum; using a vacuum; producing vacuum
Vacuum
A vacuum is a
volume of
space that is essentially empty of
matter, such that its gaseous
pressure is much less than standard
atmospheric pressure. The Latin term in vacuo is used to describe an object as being in what would otherwise be a vacuum. The root of the word vacuum is the
Latin adjective vacuus which means "empty," but space can never be perfectly empty. A perfect vacuum with a gaseous pressure of absolute zero is a philosophical concept that is never observed in practice, not least because
quantum theory predicts that no volume of space can be perfectly empty in this way.
Physicists often use the term "vacuum" slightly differently. They discuss ideal test results that would occur in a perfect vacuum, which they simply call "vacuum" or "
free space" in this context, and use the term partial vacuum to refer to the imperfect vacua realized in practice.
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Vacuum
Vacuum /vac·u·um/ [L.] a space devoid of air or of other gas; a space from which the air has been exhausted. vac·u·um n. pl. vac·u·ums or vac·u·a 1. [
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Vacuum - Community and Resources
vacuum
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 (m)
n.
vacuum, void, emptiness
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