quadrantal
rənt noun
1.
a quarter of a circle; an arc of 90°.
2.
the area included between such an arc and two radii drawn one to each extremity.
3.
something shaped like a quarter of a circle, as a part of a machine.
4.
Geometry, Astronomy. one of the four parts into which a plane, as the face of a heavenly body, is divided by two perpendicular lines, numbered counterclockwise from upper right: the first quadrant of the moon.
5.
an instrument, usually containing a graduated arc of 90°, used in astronomy, navigation, etc., for measuring altitudes.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2013.
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Based on the Random House Dictionary, © Random House, Inc. 2013.
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Link To quadrantal
00:10
Quadrantal
is always a great word to know.
So is flibbertigibbet. Does it mean:
| a chattering or flighty, light-headed person. |
| an extraordinary or unusual thing, person, or event; an exceptional example or instance. |
Collins
World English Dictionary
quadrant (ˈkwɒdrənt) ![[Click for IPA pronunciation guide]](http://static.sfdict.com/dictstatic/g/d/dictionary_questionbutton_default.gif) | |
| —n | |
| 1. | geometry |
| a. a quarter of the circumference of a circle | |
| b. the area enclosed by two perpendicular radii of a circle and its circumference | |
| c. any of the four sections into which a plane is divided by two coordinate axes | |
| 2. | a piece of a mechanism in the form of a quarter circle, esp one used as a cam or a gear sector |
| 3. | 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 |
| [C14: from Latin quadrāns a quarter] | |
| quadrantal | |
| —adj | |
| quadrant (ˈkwɒdrənt) | |
| —n | |
| 1. | geometry |
| a. a quarter of the circumference of a circle | |
| b. the area enclosed by two perpendicular radii of a circle and its circumference | |
| c. any of the four sections into which a plane is divided by two coordinate axes | |
| 2. | a piece of a mechanism in the form of a quarter circle, esp one used as a cam or a gear sector |
| 3. | 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 |
| [C14: from Latin quadrāns a quarter] | |
| quadrantal | |
| —adj | |
Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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Etymonline
Word Origin & History
quadrant
late 14c., "a quarter of a day, six hours," from L. quadrantem (nom. quadrans) "fourth part," prop. prp. of quadrare "to make square," from quadrus "a square," from quattuor "four" (see four). Sense of "measuring instrument" is first recorded c.1400, so called because it forms a quarter circle.
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Medical Dictionary
quadrant quad·rant (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.
quad·ran'tic (kwŏ-drān'tĭk) adj.
The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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American Heritage
Science Dictionary
quadrant  (kwŏd'rənt) Pronunciation Key
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The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Nearby Words
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