VERB (3)

1. divide into triangles or give a triangular form to;
- Example: "triangulate the piece of cardboard"

2. measure by using trigonometry;
- Example: "triangulate the angle"

3. survey by triangulation;
- Example: "The land surveyor worked by triangulating the plot"


ADJECTIVE (1)

1. composed of or marked with triangles;

The Collaborative International Dictionary of English v.0.48:

Triangulate \Tri*an"gu*late\, v. t. [imp. & p. p.
   Triangulated; p. pr. & vb. n. Triangulating.]
   1. To divide into triangles; specifically, to survey by means
      of a series of triangles properly laid down and measured.
      [1913 Webster]

   2. To make triangular, or three-cornered.
      [1913 Webster]

WordNet (r) 3.0 (2006):

triangulate
    adj 1: composed of or marked with triangles
    v 1: divide into triangles or give a triangular form to;
         "triangulate the piece of cardboard"
    2: measure by using trigonometry; "triangulate the angle"
    3: survey by triangulation; "The land surveyor worked by
       triangulating the plot"

Moby Thesaurus II by Grady Ward, 1.0:

58 Moby Thesaurus words for "triangulate":
   allocate, appraise, appreciate, assay, assess, assign, calculate,
   calibrate, caliper, check a parameter, collocate, compute, deploy,
   dial, dispose, divide, emplace, estimate, evaluate, fathom, fix,
   gauge, get a fix, graduate, home in on, install, localize, locate,
   measure, mensurate, mete, meter, navigate, pace, pin down,
   pinpoint, place, plumb, position, prize, probe, put in place,
   quantify, quantize, rate, situate, size, size up, sound, span,
   spot, step, survey, take a reading, valuate, value, weigh,
   zero in on