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The biological study of bodies of water.

hy′dro·bi′o·log′i·cal (-bī′ə-lŏj′ĭ-kəl) adj.
hy′dro·bi·ol′o·gist n.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


(Biology) someone who studies or specializes in hydrobiology
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
References in periodicals archive ?
"It sounds like thunder and can travel a long distance," National Geographic News quoted study co-author Xianyan Wang, a Wuhan-based hydrobiologist with the Chinese Academy of Sciences as saying.
The results of the study will provide data on biodiveristy of plankton microorganisms, hydrochemical composition, trophic status and concentration of biogenic elements," hydrobiologist Veronika Dashkova said.
by Alta Vista gave very little more than a hint that the phenomenon may be dealt with by hydrobiologists.