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ge-

pref.
  1. Variant ofgeo-
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The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
ge- in Science

geo-

  1. A prefix that means “earth,” as in geochemistry, the study of the Earth's chemistry.
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The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.