I. trī-ˈaŋ-gyə-lət adjective
Etymology: Medieval Latin triangulatus, past participle of triangulare to make triangles, from Latin triangulum
Date: 1766
: consisting of or marked with triangles
II. -ˌlāt transitive verb
( -lat·ed ; -lat·ing )
Date: 1833
1. : to survey, map, or determine by triangulation
2.
a. : to divide into triangles
b. : to give triangular form to