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.
The definition of a Trifecta is the correct selection of the first, second, and third place finishers across the wire in the exact order. Trifecta betting is popular because even a small wager can have a big payoff due to the difficulty of correctly selecting the top 3 finishers.