How do you pronounce choledocholithiaisis? What does it mean?
Stedman's Medical Dictionary by 
Merriam-Webster's Medical Dictionary by An eponym is a name or noun formed after a person. The two classic tools for resolving eponyms to their clinical features are only available in print. They are worth the trip ot the library if that is the type of question you have (or use Ask a Librarian and we can look it up for you!). In addition to the definition, they include brief information about the source of the eponym and citation(s) to the first report(s) of the condition in the literature.
What is the definition of Pick's Disease, and who is Pick?
Jablonski's Dictionary of Syndromes and Eponymic Diseases by 
Dictionary of Medical Syndromes by 
Who Named It.com: Dictionary of Medical Eponyms by 