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trilateration

[trahy-lat-uh-rey-shuh n]
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noun Surveying.
  1. a method of determining the relative positions of three or more points by treating these points as vertices of a triangle or triangles of which the angles and sides can be measured.
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Origin of trilateration

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for trilateration

trilateration

noun
  1. a method of surveying in which a whole area is divided into triangles, the sides of which are measured, usually by electromagnetic distance measuring for geodetic control or by chain survey for a detailed survey
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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