Word:   
Definitions of diagonal:
  • noun:   (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
  • noun:   an oblique line of squares of the same color on a checkerboard
    Example: "The bishop moves on the diagonals"
  • noun:   a line or cut across a fabric that is not at right angles to a side of the fabric
  • noun:   (geometry) a straight line connecting any two vertices of a polygon that are not adjacent
  • noun:   a punctuation mark (/) used to separate related items of information
  • adjective:   at an angle; especially connecting two nonadjacent corners of a plane figure or any two corners of a solid that are not in the same face
    Example: "A diagonal line across the page"
  • adjective:   having an oblique or slanted direction

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Search for diagonal at other dictionaries: OneLook, Oxford, American Heritage, Merriam-Webster, Wikipedia

See diagonal used in context: 2 rhymes, several books and articles.

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