Meaning of TRIANGULATION in English

TRIANGULATION

tri ‧ an ‧ gu ‧ la ‧ tion /traɪˌæŋɡjəˈleɪʃ ə n, traɪˌæŋɡjʊˈleɪʃ ə n/ BrE AmE noun [uncountable]

a method of finding your position by measuring the lines and angles of a triangle on a map

Longman Dictionary of Contemporary English.      Longman - Словарь современного английского языка.