Definitions for diagonaldaɪˈæg ə nl, -ˈæg nl

This page provides all possible meanings and translations of the word diagonal

Princeton's WordNet

  1. diagonal(noun)

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

  2. diagonal, bias(noun)

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

  3. diagonal(noun)

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

    "the bishop moves on the diagonals"

  4. 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

  5. solidus, slash, virgule, diagonal, stroke, separatrix(adj)

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

  6. diagonal(adj)

    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"

  7. aslant, aslope, diagonal, slanted, slanting, sloped, sloping(adj)

    having an oblique or slanted direction


  1. diagonal(Noun)

    something arranged diagonally or obliquely

  2. diagonal(Noun)

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

  3. diagonal(Noun)

    a punctuation mark used to separate related items of information

  4. diagonal(Noun)

    a diagonal line or plane

  5. diagonal(Noun)

    a line joining non-adjacent vertices of a polygon.

  6. diagonal(Adjective)

    Joining two nonadjacent vertices (of a polygon or polyhedron).

  7. diagonal(Adjective)

    Having a slanted or oblique direction, lines or markings.

  8. diagonal(Adjective)

    Pertaining to the front left and back right (or the front right and back left) legs of a quadruped.

  9. Origin: From diagonalis, from διαγώνιος, from διά + γωνία.

Webster Dictionary

  1. Diagonal(adj)

    joining two not adjacent angles of a quadrilateral or multilateral figure; running across from corner to corner; crossing at an angle with one of the sides

  2. Diagonal(noun)

    a right line drawn from one angle to another not adjacent, of a figure of four or more sides, and dividing it into two parts

  3. Diagonal(noun)

    a member, in a framed structure, running obliquely across a panel

  4. Diagonal(noun)

    a diagonal cloth; a kind of cloth having diagonal stripes, ridges, or welts made in the weaving

  5. Origin: [L. diagonalis, fr. Gr. from to angle; dia` through + an angle; perh. akin to E. knee: cf. F. diagonal.]


  1. Diagonal

    A diagonal is a line joining two nonconsecutive vertices of a polygon or polyhedron. Informally, any sloping line is called diagonal. The word "diagonal" derives from the ancient Greek διαγώνιος diagonios, "from angle to angle"; it was used by both Strabo and Euclid to refer to a line connecting two vertices of a rhombus or cuboid, and later adopted into Latin as diagonus. In mathematics, in addition to its geometric meaning, a diagonal is also used in matrices to refer to a set of entries along a diagonal line.

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