quad·​rant | \ ˈkwä-drənt How to pronounce quadrant (audio) \

Definition of quadrant

1a : an instrument for measuring altitudes consisting commonly of a graduated arc of 90 degrees with an index or vernier and usually having a plumb line or spirit level for fixing the vertical or horizontal direction
b : a device or mechanical part shaped like or suggestive of the quadrant of a circle
2a : an arc of 90 degrees that is one quarter of a circle
b : the area bounded by a quadrant and two radii
3a : any of the four parts into which a plane is divided by rectangular coordinate axes lying in that plane
b : any of the four quarters into which something is divided by two real or imaginary lines that intersect each other at right angles

Illustration of quadrant

Illustration of quadrant

quadrant 2

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Other Words from quadrant

quadrantal \ kwä-​ˈdran-​tᵊl How to pronounce quadrantal (audio) \ adjective

Did You Know?

This word is used for a traditional instrument, used to make calculations of altitude and traditionally employed by sailors to navigate, which has a piece shaped like a quarter of a circle. A quadrant shower is a shower that fits snugly into a bathroom corner and displays a curved front, making a quadrant shape on the floor. But perhaps quadrant is used most often today to name a particular quarter of a city.

Examples of quadrant in a Sentence

Draw two intersecting lines that divide the page into four quadrants. The town is located in the northwest quadrant of the state.
Recent Examples on the Web Here's a closer look at the two teams, employing the quadrant system the NCAA Division I Men’s Basketball Committee uses to give context to wins and losses. Fletcher Page, Cincinnati.com, "NCAA Tournament at-large bid on the line for UC in Wichita State rematch," 22 Feb. 2020 All seven of Butler’s Quadrant 1 wins are in the bottom half of the quadrant, increasing the importance of upcoming games at Seton Hall and Creighton. Jon Hale, The Courier-Journal, "How Kentucky basketball compares with selection committee's early March Madness four seeds," 10 Feb. 2020 That vacant lot is in the southwest quadrant of the I-43/Moorland Road interchange, at the expanding Westridge Business Park. Tom Daykin, Milwaukee Journal Sentinel, "Hampton Inn & Suites, with 109 rooms, proposed for New Berlin site at I-43 and Moorland Road," 3 Feb. 2020 But in the southwest quadrant of Adirondack State Forest, our mood shifted. Robert Christgau, Los Angeles Times, "Jimi Hendrix’s ‘Star Spangled Banner’ is the anthem we need in the age of Trump," 13 Aug. 2019 One tower is located in the southwest quadrant of the Interstate 10 interchange at Causeway Boulevard, the other near the intersection of David and Veterans Memorial boulevards. Drew Broach, NOLA.com, "This 1 chart shows how East Jefferson held water pressure despite freeze, dripping faucets," 6 Jan. 2018 That’s not an appliance on the upper (or lower) quadrant of your refrigerator. Peter Hartlaub, SFChronicle.com, "Girl Scouts Thin Mints for the apocalypse, and other stories of freezer treasures," 10 Mar. 2020 Also of note, Cincinnati's overtime loss earlier this month at UConn negated a quadrant 1 win, not that Bearcats' coach John Brannen took solace in the Huskies' NET ranking (67) keeping the contest above the quad 2 line. Fletcher Page, Cincinnati.com, "NCAA Tournament at-large bid on the line for UC in Wichita State rematch," 22 Feb. 2020 Sanchez will need to be a little quicker to snap up balls in the upper quadrants of the strike zone. Peter Abraham, BostonGlobe.com, "Why Ben Cherington is more prepared to be a GM this time," 22 Feb. 2020

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'quadrant.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of quadrant

15th century, in the meaning defined at sense 1a

History and Etymology for quadrant

Middle English, from Latin quadrant-, quadrans fourth part; akin to Latin quattuor four — more at four

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Time Traveler for quadrant

Time Traveler

The first known use of quadrant was in the 15th century

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Statistics for quadrant

Last Updated

27 Mar 2020

Cite this Entry

“Quadrant.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/quadrant. Accessed 7 Apr. 2020.

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More Definitions for quadrant


How to pronounce quadrant (audio)

English Language Learners Definition of quadrant

: one part of something that is evenly divided into four parts especially, geometry : one part of a circle that is evenly divided into four parts


quad·​rant | \ ˈkwä-drənt \

Kids Definition of quadrant

1 : one-fourth of a circle
2 : any of the four parts into which something is divided by two imaginary or real lines that intersect each other at right angles


quad·​rant | \ ˈkwäd-rənt How to pronounce quadrant (audio) \

Medical Definition of quadrant

1 : an arc of 90° that is one quarter of a circle
2 : any of the four more or less equivalent segments into which an anatomic structure may be divided by vertical and horizontal partitioning through its midpoint pain in the lower right quadrant of the abdomen

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More from Merriam-Webster on quadrant

Spanish Central: Translation of quadrant

Nglish: Translation of quadrant for Spanish Speakers

Britannica.com: Encyclopedia article about quadrant

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