Definition of triangular adjective from the Oxford Advanced Learner's Dictionary

     

    triangular

     adjective
    adjective
    BrE BrE//traɪˈæŋɡjələ(r)//
     
    ; NAmE NAmE//traɪˈæŋɡjələr//
     
     
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  1. 1 shaped like a triangle
  2. 2involving three people or groups a triangular contest in an election
  3. Word Origin mid 16th cent.: from late Latin triangularis, from Latin triangulum, neuter of triangulus ‘three-cornered’ (see tri- and the noun angle).
See the Oxford Advanced American Dictionary entry: triangular