-tries

1 definition found

From The Collaborative International Dictionary of English v.0.48 [gcide]:

  Trigonometry \Trig`o*nom"e*try\, n.; pl. {-tries}. [Gr. ? a
     triangle + -metry: cf. F. trigonom['e]trie. See {Trigon}.]
     1. That branch of mathematics which treats of the relations
        of the sides and angles of triangles, which the methods of
        deducing from certain given parts other required parts,
        and also of the general relations which exist between the


        trigonometrical functions of arcs or angles.
        [1913 Webster]
  
     2. A treatise in this science.
        [1913 Webster]
  
     {Analytical trigonometry}, that branch of trigonometry which
        treats of the relations and properties of the
        trigonometrical functions.
  
     {Plane trigonometry}, and {Spherical trigonometry}, those
        branches of trigonometry in which its principles are
        applied to plane triangles and spherical triangles
        respectively.
        [1913 Webster]