quadrilateral

[ kwod-ruh-lat-er-uh l ]
/ ˌkwɒd rəˈlæt ər əl /

adjective

having four sides.

noun

a plane figure having four sides and four angles.
something of this form.
Geometry.
  1. a figure formed by four straight lines that have six points of intersection.
  2. a polygon with four sides.
the space enclosed between and defended by four fortresses.

Origin of quadrilateral

1640–50; < Latin quadrilater(us) four-sided + -al1. See quadri-, lateral

OTHER WORDS FROM quadrilateral

quad·ri·lat·er·al·ly, adverb quad·ri·lat·er·al·ness, noun

Example sentences from the Web for quadrilateral

British Dictionary definitions for quadrilateral

quadrilateral
/ (ˌkwɒdrɪˈlætərəl) /

adjective

having or formed by four sides

noun

Also called: tetragon a polygon having four sides. A complete quadrilateral consists of four lines and their six points of intersection

Scientific definitions for quadrilateral

quadrilateral
[ kwŏd′rə-lătər-əl ]

A polygon that has four sides, such as a rectangle or rhombus.