quadrilateral

[ kwod-ruh-lat-er-uhl ]

adjective

1. having four sides.

noun

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

quadrilateral

/ ˌkwɒdrɪˈlætərəl /

adjective

1. having or formed by four sides

noun

1. Also calledtetragon a polygon having four sides. A complete quadrilateral consists of four lines and their six points of intersection

quadrilateral

/ kwŏd′rə-lăt′ər-əl /

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

Other Words From

• quadri·later·al·ly adverb
• quadri·later·al·ness noun

Word History and Origins

Origin of quadrilateral¹

First recorded in 1640–50; from Latin quadrilater(us) “four-sided” + -al ¹; equivalent to quadri- + lateral

Example Sentences

The pairing of "White Evangelicals" with "Biblical Conservatives," however, provides a hint: According to the standard definition of "Evangelical" in the Bebbington Quadrilateral, adherents believe in "a particular regard for the Bible," or the belief that all essential truth can be found in scripture, among other key tenets such as their namesake mission to evangelize the Christian faith.

From Salon

“At that point in my life, golf was absolutely everything to me,” he recently told Geoff Shackelford’s Quadrilateral sub stack.

From BBC

The on-chip quadrilateral MZI network is potentially useful for applications involving optical neural networks, which are created from networks of interconnected nodes.

From Science Daily

The chip they developed can be reconfigured by adjusting the voltages of electrodes, which creates various light propagation paths in the quadrilateral network.

From Science Daily

The researchers showed that the chip can be used to perform what is known as positive real matrix computation, verifying the feasibility of this in a quadrilateral MZI network for the first time.

From Science Daily