Source : Webster's Revised Unabridged Dictionary (1913)

Choledology \Chol`e*dol"o*gy\, n. [Gr. ? bile + -logy. Cf. F.
   chol['e]dologie.] (Med.)
   A treatise on the bile and bilary organs. --Dunglison.

   Note: Littr['e] says that the word chol['e]dologie is
         absolutely barbarous, there being no Greek word ?. A
         proper form would be cholology.