A place in which a person lives.
Conditions suitable for an organism or population of organisms to live.
A terrestrial or aquatic area distinguished by geographic, abiotic and biotic features, whether entirely natural or semi-natural.
A place or type of site where an organism or population naturally occurs.
The inhabitants of a residential area.
The set of all the vertices adjacent to a given vertex.
The residential area near one's home.
A formal or informal division of a municipality or region.
A set containing an open ball which contains a specified point.
The infinitesimal open set of all points that may be reached directly from a given point.
An approximate amount.
The quality of physical proximity.
A set containing an open set which contains some specified point.
Alternatively: An open ball which contains some specified point.
Alternatively: An open set which contains some specified point.