triangulation - definition and synonyms

noun [uncountable] 

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/traɪˌæŋɡjʊˈleɪʃ(ə)n/
  1. 1
    a method of finding out where you are using a map, a compass, and the positions of places that you know
  2. 2
    showing disapproval the method of using other people’s opinions about something to help you to decide what your opinion is