Word Study
diagonal
OXFORD DICTIONARY
diagonal, adj. & n.
--adj.
1 crossing a straight-sided figure from corner to corner.
2 slanting, oblique.
--n. a straight line joining two non-adjacent corners.
--adj.
1 crossing a straight-sided figure from corner to corner.
2 slanting, oblique.
--n. a straight line joining two non-adjacent corners.
Derivative
diagonally adv.
Etymology
L diagonalis f. Gk diagonios (as DIA-, gonia angle)
THESAURUS
diagonal
across, air line, athwart, axis, band, bar, beeline, bend, bendwise, bevel, beveled, bias, biased, biaswise, catercorner, catercornered, chord, cross-hatching, crossways, crosswise, dash, delineation, diameter, direct line, directrix, dotted line, edge, great-circle course, hachure, hairline, hatching, kittycorner, line, lineation, normal, oblique, oblique angle, oblique figure, oblique line, perpendicular, radius, radius vector, rhomboid, right line, score, scratch comma, secant, segment, separatrix, shortcut, side, slant, slanted, slanting, slash, solidus, straight, straight course, straight line, straight stretch, straightaway, streak, streaking, streamline, striation, strip, stripe, striping, stroke, sublineation, tangent, thwart, transversal, transverse, underline, underlining, underscore, underscoring, vector, virguleFor further exploring for "diagonal" in Webster Dictionary Online