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1

diagonal

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adjective di·ag·o·nal \dī-ˈa-gə-nəl, -ˈag-nəl\

Simple Definition of diagonal

  • of a straight line : joining two opposite corners of a shape (such as a square or rectangle) especially by crossing the center point of the shape

  • : not going straight across or up and down

Source: Merriam-Webster's Learner's Dictionary

Full Definition of diagonal

  1. 1 a :  joining two vertices of a rectilinear figure that are nonadjacent or two vertices of a polyhedral figure that are not in the same face b :  passing through two nonadjacent edges of a polyhedron <a diagonal plane>

  2. 2 a :  inclined obliquely from a reference line (as the vertical) <wood with a diagonal grain> b :  having diagonal markings or parts <a diagonal weave>

Examples of diagonal in a sentence

  1. The blanket is covered with diagonal stripes.

  2. <the diagonal design ran up the wall all the way from the lower left to the upper right-hand corner>



Origin and Etymology of diagonal

Latin diagonalis, from Greek diagōnios from angle to angle, from dia- + gōnia angle; akin to Greek gony knee — more at knee


First Known Use: 1563

Other Mathematics and Statistics Terms


2

diagonal

noun di·ag·o·nal

Simple Definition of diagonal

  • : a diagonal line, direction, or pattern

Source: Merriam-Webster's Learner's Dictionary

Full Definition of diagonal

  1. 1 :  a diagonal straight line or plane

  2. 2 a (1) :  a diagonal direction (2) :  a diagonal row, arrangement, or pattern b :  something oriented in diagonal position

  3. 3 :  slash 4

on the diagonal

  1. :  in an oblique direction :  diagonally

Examples of diagonal in a sentence

  1. a design with strong diagonals

  2. <the ramp was set at a low diagonal to make it easier for physically challenged patrons>



1571

First Known Use of diagonal

1571

Other Mathematics and Statistics Terms



DIAGONAL Defined for Kids

1

diagonal

play
adjective di·ag·o·nal \dī-ˈa-gə-nəl, -ˈag-nəl\

Definition of diagonal for Students

  1. 1 :  running from one corner to the opposite corner of a four-sided shape (as a square) <a diagonal line>

  2. 2 :  running in a slanting direction <diagonal stripes>

diagonally

\-nə-lē\ adverb



2

diagonal

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noun di·ag·o·nal

Definition of diagonal for Students

  1. :  a line, direction, or pattern that runs in a slanting direction





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