Diagonal — Defs

01 a. Joining two not adjacent angles of a quadrilateral or multilateral figure; running across from corner to corner; crossing at an angle with …

1.
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.(Geom.)

Phrases & compounds

Diagonal bond — herringbone work. See Herringbone, a.

Diagonal built — 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 — a chevron or zigzag molding.

Diagonal rib — 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 — Same as Cross bedding, under Cross, a.

02 n. 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.

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.
A member, in a framed structure, running obliquely across a panel.(Engin.)
3.
A diagonal cloth; a kind of cloth having diagonal stripes, ridges, or welts made in the weaving.