Word Study
limnology
CIDE DICTIONARY
limnology, n.
the scientific study of bodies of fresh water for their biological and physical and geological properties. [WordNet 1.5]
OXFORD DICTIONARY
limnology, n. the study of the physical phenomena of lakes and other fresh waters.
Derivative
limnological adj. limnologist n.
Etymology
Gk limne lake + -LOGY
For further exploring for "limnology" in Webster Dictionary Online