Medical Etymology
As I was looking for the etymology of diabetes mellitus, I came across this great list of anatomical etymology.
If you were curious, diabetes comes from the word for “siphon,” as people with diabetes urinate like a siphon draining water. Mellitus comes from the word for honey, since people with diabetes mellitus have a sweet smelling (and tasting) urine, from the excess glucose in it. Insipidus comes from insipid , meaning “lacking flavor or zest; not tasty,” since diabetes insipidus has non-sweet urine.