Quadrilateral

4 definitions found

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

  Quadrilateral \Quad`ri*lat"er*al\, a. [L. quadrilaterus: cf. F.
     quadrilat[`e]re, quadrilat['e]ral. See {Quadri-} and
     {Lateral}.]
     Having four sides, and consequently four angles;
     quadrangular.
     [1913 Webster]



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

  Quadrilateral \Quad`ri*lat"er*al\, n.
     1. (Geom.) A plane figure having four sides, and consequently
        four angles; a quadrangular figure; any figure formed by
        four lines.
        [1913 Webster]
  
     2. An area defended by four fortresses supporting each other;
        as, the Venetian quadrilateral, comprising Mantua,
        Peschiera, Verona, and Legnano.
        [1913 Webster]
  
     {Complete quadrilateral} (Geom.), the figure made up of the
        six straight lines that can be drawn through four points,
        A, B, C, I, the lines being supposed to be produced
        indefinitely.
        [1913 Webster]

From WordNet (r) 2.0 [wn]:

  quadrilateral
       adj : having four sides [syn: {four-sided}]
       n : a four-sided polygon [syn: {quadrangle}, {tetragon}]

From Moby Thesaurus II by Grady Ward, 1.0 [moby-thes]:

  51 Moby Thesaurus words for "quadrilateral":
     bifacial, bilateral, biquadratic, cube-shaped, cubed, cubic,
     cubiform, cuboid, diced, dihedral, flanked, four, four-legged,
     four-rayed, foursquare, handed, lateral, many-sided, multilateral,
     oblong, one-sided, orthogonal, polyhedral, quadrangular, quadrate,
     quadric, quadriform, quadrinomial, quadrivalent, quadruped,
     quartic, quartile, quaternary, rectangular, rhombic, rhomboid,
     sided, square, tetractinal, tetrad, tetragonal, tetrahedral,
     tetravalent, three-sided, trapezohedral, trapezoid, trihedral,
     trilateral, triquetrous, two-sided, unilateral