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vacancy

[vey-kuh n-see] /ˈveɪ kən si/
noun, plural vacancies.
1.
the state of being vacant; emptiness.
2.
a vacant, empty, or unoccupied place, as untenanted lodgings or offices:
This building still has no vacancies.
3.
a gap; opening; breach.
4.
an unoccupied position or office:
a vacancy on the Supreme Court.
5.
lack of thought or intelligence; vacuity:
a look of utter vacancy.
6.
Crystallography. (in a crystal) an imperfection resulting from an unoccupied lattice position.
Compare interstitial (def 3).
7.
Archaic. absence of activity; idleness.
Origin
1570-1580
1570-80; < Medieval Latin vacantia. See vacant, -ancy
Related forms
nonvacancy, noun, plural nonvacancies.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for nonvacancy

vacancy

/ˈveɪkənsɪ/
noun (pl) -cies
1.
the state or condition of being vacant or unoccupied; emptiness
2.
an unoccupied post or office: we have a vacancy in the accounts department
3.
an unoccupied room in a boarding house, hotel, etc: put the "No Vacancies" sign in the window
4.
lack of thought or intelligent awareness; inanity: an expression of vacancy on one's face
5.
(physics) a defect in a crystalline solid caused by the absence of an atom, ion, or molecule from its position in the crystal lattice
6.
(obsolete) idleness or a period spent in idleness
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for nonvacancy

vacancy

n.

c.1600, "state of being vacant," from Late Latin vacantia, from vacans (see vacant). Meaning "available room at a hotel" is recorded from 1953. Related: Vacancies.

Online Etymology Dictionary, © 2010 Douglas Harper
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Encyclopedia Article for nonvacancy

vacancy

in crystallography, absence of an atom or molecule from a point that it would normally occupy in a crystal. Such an imperfection (crystal defect) in the regular spacing of atoms changes the electrical and optical properties of the crystal. Colour centres are vacancies that give colour to many solids. Vacancies can be created by mechanical deformation of the crystal, rapid cooling from high temperature, or the impact of radiation on the crystal. In the so-called Schottky defect, an atom moves from the inside of the crystal to its surface, leaving behind an isolated vacancy. In the Frenkel defect, an atom moves to a new position between other atoms of the solid. The empty space created by the migration of the atom is a vacancy. The relative numbers of these two types of defects vary from crystal to crystal. See also colour centre.

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Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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