limnology (n.)
study of lakes and fresh water, 1892, with -logy + limno-, comb. form of Greek limne "pool of standing water, tidal pool, marsh, lake," from PIE root *(s)lei- "slime" (see slime (n.)). The science founded and the name probably coined by Swiss geologist François-Alphonse Forel (1841-1912). Related: Limnological; limnologist.