1 Monica (given name) 2  Monica (singer), R&B singer. 3  Monica (actress), an Indian film actress.  Saint Monica, mother of Augustine.
Definition of triangulation for English Language Learners. : a method of finding a distance or location by measuring the distance between two points whose exact location is known and then measuring the angles between each point and a third unknown point.
Definition of triangulation. : the measurement of the elements necessary to determine the network of triangles into which any part of the earth's surface is divided in surveying; broadly : any similar trigonometric operation for finding a position or location by means of bearings from two fixed points a known distance apart.