Noun
(countable) A location of something within a larger area or region, such as a part of a city or a section of a river.
(countable) A location specified on a microscopic scale, such as on a biochip or on a DNA molecule.
(uncountable) The process of electronically determining the location of something with a level of precision that locates it within a building or room.
(countable) A specific location detected or targeted by micro-location technology.
Source: en.wiktionary.org