Definition of Quadrelateral
Quad`ri*lat"er*al (?), a. [L.
quadrilaterus: cf. F. quadrilatère,
quadrilatéral. See Quadri- and Lateral.]
Having four sides, and consequently four angles;
quadrangular.
Quad`ri*lat"er*al, n. 1.
(Geom.) A plane figure having four sides, and consequently
four angles; a quadrangular figure; any figure formed by four
lines.
2. An area defended by four fortresses
supporting each other; as, the Venetian quadrilateral,
comprising Mantua, Peschiera, Verona, and Legnano.
Complete quadrilateral (Geom.), the
figure made up of the six straight lines that can be drawn through
four points, A, B, C, I, the lines being
supposed to be produced indefinitely.
- Webster's Unabridged Dictionary (1913)
- a polygon having four sides.
- having four sides.
- The Nuttall Encyclopedia
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The correct Spelling of this word is: Quadrilateral
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