See under diagonal (def 9).
connecting two nonadjacent angles or vertices of a polygon or polyhedron, as a straight line.
extending from one edge of a solid figure to an opposite edge, as a plane.
having an oblique direction.
having oblique lines, ridges, markings, etc.
a diagonal line or plane.
a diagonal row, part, pattern, etc.
Manège. (of a horse at a trot) the foreleg and the hind leg, diagonally opposite, which move forward simultaneously.
Mathematics. a set of entries in a square matrix running either from upper left to lower right (main diagonal or principal diagonal) or lower left to upper right (secondary diagonal)
Chess. one of the oblique lines of squares on a chessboard:
He advanced his bishop along the open diagonal.
(maths) connecting any two vertices that in a polygon are not adjacent and in a polyhedron are not in the same face
marked with slanting lines or patterns
(maths) a diagonal line or plane
(chess) any oblique row of squares of the same colour
cloth marked or woven with slanting lines or patterns
something put, set, or drawn obliquely
another name for solidus (sense 1)
one front leg and the hind leg on the opposite side of a horse, which are on the ground together when the horse is trotting
Adjective Connecting two nonadjacent corners in a polygon or two nonadjacent corners in a polyhedron that do not lie in the same face.
Noun A diagonal line segment.
- Secondary digestion
secondary digestion n. Digestion of nutrients by the cells of the body, especially through metabolic activity, as opposed to the breakdown of nutrients by primary digestion.
- Secondary disease
secondary disease n. A disease that follows and results from an earlier disease, injury, or event. A wasting disorder that follows the successful transplantation of bone marrow into a patient whose immune system has been destroyed by radiation, usually accompanied by fever, diarrhea, and dermatitis.
- Secondary drive
secondary drive n. A drive not directly related to a biological need. Also called acquired drive.
- Secondary dysmenorrhea
secondary dysmenorrhea n. Dysmenorrhea due to inflammation, infection, tumor, or anatomical factors.