quadrant
[ kwodruh nt ]
/ ˈkwɒd rənt /

noun
Nearby words
Origin of quadrant
1350–1400; Middle English < Latin quadrant (stem of quadrāns) fourth part
Related forms
quad·ran·tal [kwodrantl] /kwɒˈdræn tl/, adjectivequad·rant·like, adjectiveDictionary.com Unabridged
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Examples from the Web for quadrantal
The errors of the compass in an iron ship are mainly the semicircular error and the quadrantal error.
Lord KelvinAndrew Gray
British Dictionary definitions for quadrantal
quadrant
/ (ˈkwɒdrənt) /
noun
geometry
 a quarter of the circumference of a circle
 the area enclosed by two perpendicular radii of a circle and its circumference
 any of the four sections into which a plane is divided by two coordinate axes
a piece of a mechanism in the form of a quarter circle, esp one used as a cam or a gear sector
an instrument formerly used in astronomy and navigation for measuring the altitudes of stars, consisting of a graduated arc of 90° and a sighting mechanism attached to a movable arm
Derived Forms
quadrantal (kwɒˈdræntəl), adjectiveWord Origin for quadrant
C14: from Latin quadrāns a quarter
Collins English Dictionary  Complete & Unabridged 2012 Digital Edition
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Medicine definitions for quadrantal
quadrant
[ kwŏd′rənt ]
n.
A circular arc of 90 degrees; one fourth of the circumference of a circle.
A quarter portion of any roughly circular anatomical area such as the abdomen, measuring along imaginary axes at right angles to each other.
Related forms
quad•ran′tic (kwŏdrăn′tĭk) adj.The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
Science definitions for quadrantal
quadrant
[ kwŏd′rənt ]
An arc equal to one quarter of the circumference of a circle; an arc of 90°.
Any of the four regions into which a plane is divided by the axes of a Cartesian coordinate system. The quadrants are numbered counterclockwise one through four, beginning with the quadrant in which both the x and ycoordinates are positive (usually the upper right quadrant).
A navigational instrument similar to a sextant but with an arc of 90° rather than 60°. See more at sextant.
The American Heritage® Science Dictionary
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