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.
trichromatic - having or involving three colors; trichromatic vision; a trichromatic printing process; trichromatic staining is the staining of tissue samples differentially in three colors; tricolor plumage; a tricolor process in photography.