UN - Geographic Information Systems
A zero-dimensional object. An x,y coordinate that is used in a digital geographic database to represent features that are too small to be shown as lines or polygons. For example, households, wells or buildings are often shown as points.
United Nations, "Handbook on Geospatial Infrastructure in Support of Census Activities", Department of Economic and Social Affairs, Statistics Division, Studies in Methods, Series F No. 103, New York, 2009