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astrogeology

[as-troh-jee-ol-uh-jee]
noun
  1. the science dealing with the structure and composition of planets and other bodies in the solar system.
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Origin of astrogeology

astro- + geology
Related formsas·tro·ge·o·log·ic [as-troh-jee-uh-loj-ik] /ˌæs troʊˌdʒi əˈlɒdʒ ɪk/, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
British Dictionary definitions for astrogeology

astrogeology

noun
  1. the study of the structure, composition, and history of other planets and other bodies in the solar system
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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