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.
2. the line at each end of a tennis court, parallel to the net, that marks the in-bounds limit of play. 3. a basic standard or level; guideline: a baseline for future studies. 4. a specific value serving as a comparison. 5. See triangulation (def. 1).