[tri.an.gu.late] adj [ML triangulatus, pp. of triangulare to make triangles, fr. L triangulum] (1766): consisting of or marked with triangles
[2]tri.an.gu.late vt -lat.ed ; -lat.ing (1833) 1: to survey, map, or determine by triangulation
2. a: to divide into triangles b: to give triangular form to