Meaning of quadrilateral

quad•ri•lat•er•al

Pronunciation: (kwod"ru-lat'ur-ul), [key]
— adj.
  1. having four sides.
—n.
  1. a plane figure having four sides and four angles.
  2. something of this form.
    1. a figure formed by four straight lines that have six points of intersection.
    2. a polygon with four sides.
  3. the space enclosed between and defended by four fortresses.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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