The building blocks of English

Affixes

limn(o)-

Fresh water.

from Greek limnē, lake.

This form is most commonly found in limnology, the study of the features of bodies of fresh water, and in its compounds. Other examples are limnic, of a sediment laid down in fresh water such as a lake or swamp; Limnaea, the genus of freshwater pond snails; and limnoplankton, plankton that prefer fresh water.