Thanks for using this online dictionary, we have been helping millions of people improve their use of the english language with its free online services. English definition of quadrilateral is as below...

Quadrilateral :: Quadrilateral (a.) Having four sides, and consequently four angles; quadrangular..

Diploid :: Diploid (n.) A solid bounded by twenty-four similar quadrilateral faces. It is a hemihedral form of the hexoctahedron.

Quadrilateralness :: Quadrilateralness (n.) The property of being quadrilateral.

Deltohedron :: Deltohedron (n.) A solid bounded by twelve quadrilateral faces. It is a hemihedral form of the isometric system, allied to the tetrahedron..

Quadrilateral :: Quadrilateral (n.) An area defended by four fortresses supporting each other; as, the Venetian quadrilateral, comprising Mantua, Peschiera, Verona, and Legnano..

Diagonal :: Diagonal (a.) 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.

Kite :: Kite (n.) A quadrilateral, one of whose diagonals is an axis of symmetry..

Parallelogram :: Parallelogram (n.) A right-lined quadrilateral figure, whose opposite sides are parallel, and consequently equal; -- sometimes restricted in popular usage to a rectangle, or quadrilateral figure which is longer than it is broad, and with right angles..

Rhomb :: Rhomb (n.) An equilateral parallelogram, or quadrilateral figure whose sides are equal and the opposite sides parallel. The angles may be unequal, two being obtuse and two acute, as in the cut, or the angles may be equal, in which case it is usually called a square..

Quadrilateral :: Quadrilateral (n.) A plane figure having four sides, and consequently four angles; a quadrangular figure; any figure formed by four lines..

Roundfish :: Roundfish (n.) A lake whitefish (Coregonus quadrilateralis), less compressed than the common species. It is very abundant in British America and Alaska..

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