having or representing the earth as a center: a geocentric theory of the universe.
using the earth or earthly life as the only basis of evaluation.
viewed or measured as from the center of the earth: the geocentric position of the moon.

1680–90; geo- + -centric

geocentrically, adverb Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
geocentric (ˌdʒiːəʊˈsɛntrɪk)
1.  having the earth at its centre: the Ptolemaic system postulated a geocentric universe
2.  measured from or relating to the centre of the earth

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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Word Origin & History

1680s, from Gk. geo- comb. form of ge "earth" + -centric.
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Science Dictionary
geocentric   (jē'ō-sěn'trĭk)  Pronunciation Key 
  1. Relating to or measured from the Earth's center.

  2. Relating to a model of the solar system or universe having the Earth as the center. Compare heliocentric.

The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Example sentences
But, that doesn't mean there aren't many other reasons why one would choose solar-centric system over a geocentric one.
The principal cause of systematic bias in ellipsoidal heights is the non-geocentric realization of a reference system.
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