Source : Webster's Revised Unabridged Dictionary (1913)

Hematology \Hem`a*tol"o*gy\, n. [Hemato- + -logy.]
   The science which treats of the blood.

Source : WordNet®

hematology
     n : the branch of medicine that deals with diseases of the blood
         and blood-forming organs [syn: {haematology}]