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geology definition

ge·ol·ogy (jē äl′ə jē)

noun pl. geologies -·gies

  1. the science dealing with the physical nature and history of the earth, including the structure and development of its crust, the composition of its interior, individual rock types, the forms of life found as fossils, etc.
  2. the structure of the earth's crust in a given region, area, or place
  3. a book about geology

Etymology: ML geologia: see geo- & -logy

Webster's New World College Dictionary Copyright © 2005 by Wiley Publishing, Inc., Cleveland, Ohio.
Used by arrangement with John Wiley & Sons, Inc.

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