# diagonal

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## di·ag·o·nal

(dī-ăg′ə-nəl)*adj.*

**1.**

*Mathematics*

**a.**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.

*n.*

**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.

[Latin diagōnālis, from Greek diagōnios,

*from angle to angle*: dia-,*dia-*+ gōniā,*angle, corner*; see genu- in Indo-European roots.]**di·ag′o·nal·ly**

*adv.*

## diagonal

(daɪˈæɡənəl)*adj*

**1.**(Mathematics)

*maths*connecting any two vertices that in a polygon are not adjacent and in a polyhedron are not in the same face

**2.**slanting; oblique

**3.**marked with slanting lines or patterns

*n*

**4.**(Mathematics)

*maths*a diagonal line or plane

**5.**(Chess & Draughts)

*chess*any oblique row of squares of the same colour

**6.**(Textiles) cloth marked or woven with slanting lines or patterns

**7.**something put, set, or drawn obliquely

**9.**(Horse Training, Riding & Manège) 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

[C16: from Latin

*diagōnālis,*from Greek*diagōnios,*from dia- +*gōnia*angle]**diˈagonally**

*adv*

## di•ag•o•nal

(daɪˈæg ə nl, -ˈæg nl)*adj.*

**1.**

**a.**connecting two nonadjacent angles or vertices of a polygon or polyhedron: a diagonal line.

**b.**extending from one edge of a solid figure to an opposite edge: a diagonal plane.

**2.**having an oblique direction.

**3.**having oblique lines or markings.

*n.*

**4.**a diagonal line or plane.

**5.**virgule.

**6.**a diagonal row, part, or pattern.

**di•ag′o•nal•ly,**

*adv.*

## di·ag·o·nal

(dī-ăg′ə-nəl)*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.

ThesaurusAntonymsRelated WordsSynonyms

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Noun | 1. | diagonal - (geometry) a straight line connecting any two vertices of a polygon that are not adjacentgeometry - the pure mathematics of points and lines and curves and surfaces straight line - a line traced by a point traveling in a constant direction; a line of zero curvature; "the shortest distance between two points is a straight line" |

2. | diagonal - a line or cut across a fabric that is not at right angles to a side of the fabricstraight line - a line traced by a point traveling in a constant direction; a line of zero curvature; "the shortest distance between two points is a straight line" | |

3. | diagonal - an oblique line of squares of the same color on a checkerboard; "the bishop moves on the diagonals"checker board, checkerboard - a board having 64 squares of two alternating colors main diagonal, principal diagonal - the diagonal of a square matrix running from the upper left entry to the lower right entry secondary diagonal - the diagonal of a square matrix running from the lower left entry to the upper right entry line - a formation of people or things one behind another; "the line stretched clear around the corner"; "you must wait in a long line at the checkout counter" line - a formation of people or things one beside another; "the line of soldiers advanced with their bayonets fixed"; "they were arrayed in line of battle"; "the cast stood in line for the curtain call" | |

4. | diagonal - (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 entrymath, mathematics, maths - a science (or group of related sciences) dealing with the logic of quantity and shape and arrangement set - (mathematics) an abstract collection of numbers or symbols; "the set of prime numbers is infinite" square matrix - a matrix with the same number of rows and columns | |

5. | diagonal - a punctuation mark (/) used to separate related items of informationpunctuation mark, punctuation - the marks used to clarify meaning by indicating separation of words into sentences and clauses and phrases | |

Adj. | 1. | diagonal - connecting two nonadjacent corners of a plane figure or any two corners of a solid that are not in the same face; "a diagonal line across the page"oblique - slanting or inclined in direction or course or position--neither parallel nor perpendicular nor right-angled; "the oblique rays of the winter sun"; "acute and obtuse angles are oblique angles"; "the axis of an oblique cone is not perpendicular to its base" |

2. | diagonal - having an oblique or slanted directioninclined - at an angle to the horizontal or vertical position; "an inclined plane" |

## diagonal

*adjective*slanting, angled, oblique, cross, crosswise, crossways, cater-cornered

*(U.S. informal)*, cornerways a pattern of diagonal lines

## diagonal

*adjective*

Translations

**úhlopříčka**

**úhlopříčný**

**diagonal**

**vino**

**lävistäjä**

**viisto**

**dijagonalan**

**átlós**

**ferde**

**rézsútos**

**átló**

**hornalína**

**対角の**

**대각선의**

**diagonalė**

**įstrižai**

**įstrižainė**

**diagonāle**

**uhlopriečka**

**diagonala**

**diagonalen**

**diagonal**

**ทแยงมุม**

**chéo**

## diagonal

(daiˈӕgənl)*noun*

a line going from one corner to the opposite corner. The two diagonals of a rectangle cross at the centre.

**diˈagonally**

*adverb*

in a diagonal line. He walked diagonally across the field.

## diagonal

→ قُطْريّ úhlopříčný diagonal diagonal διαγώνιος diagonal, en diagonal vino diagonal dijagonalan diagonale 対角の 대각선의 diagonaal diagonal przekątny diagonal диагональный diagonal ทแยงมุม köşegen chéo 对角线的## diagonal

*a.*diagonal, sección transversal.

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