Meaning of diagonal

diagonal




A diagonal is made out of a straight line that’s set at an angle instead of straight up or across. If you picture a square and draw a line connecting the opposite corners, that’s a diagonal line.

You’ll find diagonal lines in geometry, and also in the world around you. A quarterback might throw a diagonal pass that angles across the field, or you might buy a snazzy new leotard with diagonal stripes. Diagonal can be either a noun or an adjective. You could call the steep slope of a hill a diagonal across the sky, or you could talk about the diagonal hillside reaching up toward the clouds.

Definitions of diagonal
  1. adjective

    having an oblique or slanted direction

    synonyms:

    aslant, aslope, slanted, slanting, sloped, sloping

    inclined

    at an angle to the horizontal or vertical position
  2. adjective

    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”
    Synonyms:

    oblique

    slanting or inclined in direction or course or position–neither parallel nor perpendicular nor right-angled
  3. noun

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

    see moresee less

    type of:

    straight line

    a line traced by a point traveling in a constant direction; a line of zero curvature

  4. noun

    a line or cut across a fabric that is not at right angles to a side of the fabric

    synonyms:

    bias

    see moresee less

    type of:

    straight line

    a line traced by a point traveling in a constant direction; a line of zero curvature

  5. 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

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    type of:

    set

    (mathematics) an abstract collection of numbers or symbols

  6. noun

    an oblique line of squares of the same color on a checkerboard

    “the bishop moves on the
    diagonals
    see moresee less

    types:

    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
    type of:

    line

    a formation of people or things one behind another
    line

    a formation of people or things one beside another

  7. noun

    a punctuation mark (/) used to separate related items of information

    synonyms:

    separatrix, slash, solidus, stroke, virgule

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    type of:

    punctuation, punctuation mark

    the marks used to clarify meaning by indicating separation of words into sentences and clauses and phrases

Word Family

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