1.Mathematicsa. Joining two nonadjacent vertices of a polygon. b. Joining two vertices of a polyhedron not in the same face. 2. Having a slanted or oblique direction. 3. Having oblique lines or markings. 4. Relating to or being the front left and back right feet or the front right and back left feet of a quadruped.
NOUN:
1.Mathematics A diagonal line or plane. 2. Something, such as a row, course, or part, that is arranged obliquely. 3. A fabric woven with diagonal lines. 4. A virgule.
ETYMOLOGY:
Latin diagnlis, from Greek diagnios, from angle to angle : dia-, dia- + gni, angle, corner; see genu-1 in Appendix I.
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lis, from Greek diag
