diagonal

noun

(geometry) A line joining non-adjacent vertices of a polygon.

(geometry) A line or plane at an oblique angle to another.

Anything forming or resembling such a line, particularly:

(fashion) A line or cut across a fabric at an oblique angle to its sides.

(typography, uncommon) Synonym of slash ⟨/⟩.

A city and town in Iowa.

adjective

(geometry) Joining two nonadjacent vertices (of a polygon or polyhedron).

Having a slanted or oblique direction.

Having slanted or oblique lines or markings.

Of or related to the cater-corner (diagonally opposite) legs of a quadruped, whether the front left and back right or front right and back left.

Roots

diadia- · Greek · through, across gonia-gon · Greek · angle

Synonyms for diagonal

slantingadj slantedadj perpendicularadj separatrixn virgulen crosswiseadv transversaladj transverseadj solidusn obliqueadj

Synonyms & related words for diagonal

Find synonyms, related words, and the definition of diagonal — including slanting, slanted, perpendicular, separatrix, virgule, crosswise. Dendril is a free visual thesaurus that shows them on an interactive map where stronger matches sit closer to the center — no signup, no ads.

Words related to diagonal

Explore words related to diagonal — words associated with it, words that go with it, and its nearest matches in meaning. Related words include diagonally, cornerwise, aslope, aslant, sloping, rectilinear, slantwise, horizontal. Click any word to make it the center of the map and keep exploring the web of connections.

Synonyms for diagonal

Common synonyms for diagonal include slanting, slanted, perpendicular, separatrix, virgule, crosswise, transversal, transverse — words that share a close meaning. Hover or tap any word on the map for its definition and part of speech.

Where does diagonal come from?

The word diagonal breaks down into 2 roots of Greek origin: dia-, from Greek dia (“through, across”); and -gon, from Greek gonia (“angle”). Explore each root to see other English words built from the same source.