- the branch of medical science concerned with diseases of the blood and blood-forming tissues
WordReference Random House Unabridged Dictionary of American English © 2026
he•ma•tol•o•gy
(hē′mə tol′ə jē, hem′ə-),USA pronunciation n. [Med.]
he•ma•to•log•ic
(hē′mə tl oj′ik, hem′ə-, hi mat′ə-),USA pronunciation he′ma•to•log′i•cal, adj.
he′ma•tol′o•gist, n.
- Medicinethe study of the nature, function, and diseases of the blood and of blood-forming organs.
- 1805–15; hemato- + -logy
Collins Concise English Dictionary © HarperCollins Publishers::
haematology, US hematology /ˌhɛm-; ˌhiːməˈtɒlədʒɪ/ n
'hematology' also found in these entries (note: many are not synonyms or translations):