Vacancy is a missing atom or ion in a crystal lattice.
A lattice position which is not occupied by atoms.
a lattice position that is vacant because the atom is missing
a lattice site from which the atom or ion is missing
a missing atom from the diamond crystal structure
The number of units or space (of a specific commercial type) that are vacant and available for occupancy at a particular point in time within a given market (usually expressed as a vacancy rate).
vacant space expressed as a percentage of the total space available, in a given market, at a given time
Created when the seat of an electorate MP or a list MP becomes vacant in one of the ways set out in the Electoral Act 1993, e.g. if the MP dies or resigns from Parliament. A by-election is normally held to fill a vacancy in an electorate seat, whereas a vacant list seat is filled by the next unsuccessful candidate on the party's list who is still a member of the party and who is willing to become an MP until the next general election. See also: details on by-elections; table of recent by-election results