Noun
1. The scientific study of bodies of fresh water for their biological and physical and geological properties.The study of freshwater ecosystems. (biology-online.org)
2. The study of inland waters. It covers the biological, chemical, physical, geological, and other attributes of all inland waters (running and standing waters, both fresh and saline, natural or man-made). This includes the study of lakes and ponds, rivers, springs, streams and wetlands. (wikipedia.com)
Syn: freshwater science
Word origin: From Greek: Λίμνη limnee, “lake”; and λόγος, logos, “knowledge”