limnologyPronunciation: /lɪmˈnɒlədʒi/Definition of limnology noun [mass noun] the study of the biological, chemical, and physical features of lakes and other bodies of fresh water. Derivatives limnologicalPronunciation: /-nəˈlɒdʒɪk(ə)l/ adjective limnologist noun Origin: late 19th century: from Greek limnē 'lake' + -logylimnology in other Oxford dictionaries Definition of limnology in the US English dictionary