Definition of "astrogeology" [astrogeology]

• The geology of celestial bodies. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "Dr. Rowan joined the astrogeology branch of the United States Geological Survey in the mid-1960s."
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• "He edited eight major encyclopedias of specialized scientific papers in the atmospheric sciences and astrogeology; geomorphology; geochemistry and the earth sciences; geology, sedimentology, paleontology, oceanography and, not least, climatology."