di·ag·o·nal /daɪˈægənḷ, ˈægnəl/
 (a.)對角線的,斜的,斜紋的對角線,斜線,斜列
 diagonal
 反對角線
 diagonal
 對角
 Di·ag·o·nal a.  Geom. Joining two not adjacent angles of a quadrilateral or multilateral figure; running across from corner to corner; crossing at an angle with one of the sides.
 Diagonal bond Masonry, herringbone work. See Herringbone, a.
 Diagonal built Shipbuilding, built by forming the outer skin of two layers of planking, making angles of about 45° with the keel, in opposite directions.
 Diagonal cleavage. See under Cleavage.
 Diagonal molding Arch., a chevron or zigzag molding.
 Diagonal rib. Arch. See Cross-springer.
 Diagonal scale, a scale which consists of a set of parallel lines, with other lines crossing them obliquely, so that their intersections furnish smaller subdivisions of the unit of measure than could be conveniently marked on a plain scale.
 Diagonal stratification. Geol. Same as Cross bedding, under Cross, a.
 Di·ag·o·nal n.
 1. A right line drawn from one angle to another not adjacent, of a figure of four or more sides, and dividing it into two parts.
 2. Engin. A member, in a framed structure, running obliquely across a panel.
 3. A diagonal cloth; a kind of cloth having diagonal stripes, ridges, or welts made in the weaving.
 ◄ ►
 diagonal
      adj 1: at an angle; especially connecting two nonadjacent corners
             of a plane figure or any two corners of a solid that
             are not in the same face; "a diagonal line across the
             page"
      2: having an oblique or slanted direction [syn: aslant, aslope,
          slanted, slanting, sloped, sloping]
      n 1: (geometry) a straight line connecting any two vertices of a
           polygon that are not adjacent
      2: a line or cut across a fabric that is not at right angles to
         a side of the fabric [syn: bias]
      3: an oblique line of squares of the same color on a
         checkerboard; "the bishop moves on the diagonals"
      4: (mathematics) a set of entries in a square matrix running
         diagonally either from the upper left to lower right entry
         or running from the upper right to lower left entry
      5: a punctuation mark (/) used to separate related items of
         information [syn: solidus, slash, virgule, stroke,
          separatrix]