[adjective trahy-ang-gyuh-lit, -leyt; verb trahy-ang-gyuh-leyt]


composed of or marked with triangles.

verb (used with object), tri·an·gu·lat·ed, tri·an·gu·lat·ing.

to make triangular.
to divide into triangles.
to survey (an area) by triangulation.

Nearby words

  1. triangular bandage,
  2. triangular bone,
  3. triangular matrix,
  4. triangular muscle,
  5. triangular trade,
  6. triangulation,
  7. triangulation station,
  8. triangulum,
  9. triangulum australe,
  10. triannual

Origin of triangulate

1600–10; < Medieval Latin triangulātus, past participle of triangulāre to make triangles. See triangle, -ate1

Related formstri·an·gu·la·tor, nounsub·tri·an·gu·late, adjective Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for triangulate

British Dictionary definitions for triangulate


verb (traɪˈæŋɡjʊˌleɪt) (tr)

  1. to survey by the method of triangulation
  2. to calculate trigonometrically
to divide into triangles
to make triangular

adjective (traɪˈæŋɡjʊlɪt, -ˌleɪt)

marked with or composed of triangles
Derived Formstriangulately, adverb

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for triangulate



1833, originally in surveying," from Latin triangulum (see triangle) + -ate (2). Related: Triangulated; triangulating. Figurative use by 1860.

Online Etymology Dictionary, © 2010 Douglas Harper