v. & adj.
v.tr. 1 divide (an area) into triangles for surveying purposes. 2 a measure and map (an area) by the use of triangles with a known base length and base angles. b determine (a height, distance, etc.) in this way.
adj. Zool. marked with triangles. triangulately adv. triangulation n.
[ L triangulatus triangular (as TRIANGLE) ]