Hypertext Webster Gateway: "Diagonal"
From Webster's Revised Unabridged Dictionary (1913) (web1913)
Diagonal \Di*ag"o*nal\, a. [L. diagonalis, fr. Gr. ? from to
angle; dia` through + ? an angle; perh. akin to E. knee: cf.
F. diagonal.] (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[deg] 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.
From Webster's Revised Unabridged Dictionary (1913) (web1913)
Diagonal \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.
From WordNet (r) 1.7 (wn)
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 [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}]
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