English dictionary

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English adjective: diagonal

1. diagonal connecting two nonadjacent corners of a plane figure or any two corners of a solid that are not in the same face

SamplesA diagonal line across the page.


Antonymsparallel, perpendicular

2. diagonal having an oblique or slanted direction

Synonymsaslant, aslope, slanted, slanting, sloped, sloping


Antonymshorizontal, vertical, perpendicular

English noun: diagonal

1. diagonal (shape) (geometry) a straight line connecting any two vertices of a polygon that are not adjacent

Broader (hypernym)straight line

Domain categorygeometry

2. diagonal (shape) a line or cut across a fabric that is not at right angles to a side of the fabric


Broader (hypernym)straight line

3. diagonal (group) an oblique line of squares of the same color on a checkerboard

SamplesThe bishop moves on the diagonals.

Broader (hypernym)line, line

Narrower (hyponym)main diagonal, principal diagonal, secondary diagonal

Part meronymchecker board, checkerboard

4. diagonal (group) (mathematics) a set of entries in a square matrix running diagonally either from the upper left to lower right entry or running from the upper right to lower left entry

Broader (hypernym)set

Part meronymsquare matrix

Domain categorymath, mathematics, maths

5. diagonal (communication) a punctuation mark (/) used to separate related items of information

Synonymsseparatrix, slash, solidus, stroke, virgule

Broader (hypernym)punctuation, punctuation mark

Based on WordNet 3.0 copyright © Princeton University.
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