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4 definitions found
 for triangular
From The Collaborative International Dictionary of English v.0.48 :

  Compasses \Com"pass*es\, n., pl.
     An instrument for describing circles, measuring figures,
     etc., consisting of two, or (rarely) more, pointed branches,
     or legs, usually joined at the top by a rivet on which they
     move.
     [1913 Webster]
  
     Note: The compasses for drawing circles have adjustable pen
           points, pencil points, etc.; those used for measuring
           without adjustable points are generally called
           dividers. See Dividers.
           [1913 Webster]
  
     Bow compasses. See Bow-compass.
  
     Caliber compasses, Caliper compasses. See Calipers.
  
     Proportional, Triangular, etc., compasses. See under
        Proportional, etc.
        [1913 Webster]

From The Collaborative International Dictionary of English v.0.48 :

  Triangular \Tri*an"gu*lar\, a. [L. triangularis: cf. F.
     triangulaire.]
     1. Having three angles; having the form of a triangle.
        [1913 Webster]
  
     2. (Bot.) Oblong or elongated, and having three lateral
        angles; as, a triangular seed, leaf, or stem.
        [1913 Webster]
  
     Triangular compasses, compasses with three legs for taking
        off the angular points of a triangle, or any three points
        at the same time.
  
     Triangular crab (Zool.), any maioid crab; -- so called
        because the carapace is usually triangular.
  
     Triangular numbers (Math.), the series of numbers formed by
        the successive sums of the terms of an arithmetical
        progression, of which the first term and the common
        difference are 1. See Figurate numbers, under
        Figurate.
        [1913 Webster]

From WordNet (r) 3.0 (2006) :

  triangular
      adj 1: having three angles; forming or shaped like a triangle;
             "a triangular figure"; "a triangular pyrimid has a
             triangle for a base"
      2: having three sides; "a trilateral figure" [syn: trilateral,
         triangular, three-sided]

From Moby Thesaurus II by Grady Ward, 1.0 :

  44 Moby Thesaurus words for "triangular":
     cuneate, cuneated, cuneiform, deltoid, fan-shaped, oxygonal, three,
     three-cornered, three-dimensional, three-footed, three-in-one,
     three-pronged, three-sided, triadic, trial, triangulate, triarch,
     trichotomous, tricorn, tricornered, tricuspid, trident, tridental,
     trifid, triflorate, triflorous, trifurcate, trigonal, trigonoid,
     trigrammatic, trihedral, trilateral, trimerous, trinal, trine,
     triparted, tripartite, triple, triplex, tripodic, triquetral,
     triquetrous, trisected, triune
  
  

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