Definition of "hydrogeology" [hydrogeology]

• The branch of geology that deals with the occurrence, distribution, and effect of ground water. (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. Reza claimed, "Prof. Jiin-Shuh Jean has great potential in hydrogeology which is related to my research background."
• "I stretch Google Earth to its functional limits all the time in my hydrogeology research."
• "Was a geologist, and had previously worked in hydrogeology while in college, so I moved into hydrogeology/environmental work."