My new favorite word: limnology, or "the study of inland waters."

Apparently has nothing to do with the much-maligned limn: "'Limn' is the phoniest word in the critic's vocabulary, aside from luminous to describe a writer's prose (and usually rather gushy prose at that). [...] Most of the time journalists resort to limn because they want something fancier than describe. " So sez Michael Dirda.

"Luminous writing" has been patented, by the way.