Trī-ăn'gu-lā'tion, n.

n. [Fr. triangulation, It. triangolazione.] (Survey.) The series or net-work of triangles with which the face of a country, or any portion of it, is covered in a trigonometrical survey; the operation of measuring the elements necessary to determine the triangles into which the country to be surveyed is supposed to be divided, and thus fix the positions and distances of the several points connected by them.