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Definition of "geology" []

  • The scientific study of the origin, history, and structure of the earth. (noun)
  • The structure of a specific region of the earth's crust. (noun)
  • A book on geology. (noun)
  • The scientific study of the origin, history, and structure of the solid matter of a celestial body. (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.

Use "geology" in a sentence
  • "Mainly within the last century has this knowledge been organized into the science of geology, and only within the last few decades have the complex and increasing demands of modern civilization required the applications of geology to practical uses, resulting in the development of the science generally known as _economic geology_."
  • "The term geology was first used in the late 18th Century."
  • "I will try to knock out a Ph. D in geology, and we are already talking about going to Canada."