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[jee-od-uh-see] /dʒiˈɒd ə si/
the branch of applied mathematics that deals with the measurement of the shape and area of large tracts of country, the exact position of geographical points, and the curvature, shape, and dimensions of the earth.
Also, geodetics
[jee-uh-det-iks] /ˌdʒi əˈdɛt ɪks/ (Show IPA)
Origin of geodesy
1560-70; < French géodésie < Greek geōdaisía, equivalent to geō- geo- + daí(ein) to divide + -sia, variant of -ia -ia (generalized from stems ending in t)
Related forms
geodesist, noun Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2018.
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British Dictionary definitions for geodesy


the branch of science concerned with determining the exact position of geographical points and the shape and size of the earth
Derived Forms
geodesist, noun
Word Origin
C16: from French géodésie, from Greek geōdaisia, from geo- + daiein to divide
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for geodesy

1560s, "surveying," from Modern Latin geodaesia, from Greek geodaisia "division of the earth;" ultimately from ge "earth" (see Gaia) + stem of daiein "divide."

Online Etymology Dictionary, © 2010 Douglas Harper
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geodesy in Science
The scientific study of the size and shape of the Earth, its field of gravity, and such varying phenomena as the motion of the magnetic poles and the tides.

geodetic adjective
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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