Here are two fun words that I have learned in my classes this semester:
From my multivariate statistics class: Kurtosis
Sounds like a disease, but it really has to do with the flatness or peakedness of a curve. Even more fun are the related terms platykurtic and leptokurtic.
From my clinical measurement/evaluation class: Schistosomiasis
The professor that teaches this class is an infectious diseases doctor, so he used this disease in one of our class examples. Actually what happened was that he asked for us to call out a disease, and someone suggested schistosomiasis, but I think they just said it because it sounded cool.