n. A scientist, usually a medical doctor, who specializes in hematology.
The Century Dictionary and Cyclopedia
n. One who makes a special study of the blood and of the changes which occur in it in health and in disease.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
n. a doctor who specializes in diseases of the blood and blood-forming organs
Word Usage
"Additionally, only one in five people correctly answered that a hematologist is the type of specialist who treats blood disorders; similarly, only one in five could define hematology."