/ Dictionary / Index H hematology: Meaning and Definition of Find definitions for: he•ma•tol•o•gy Pronunciation: (hē"mu-tol'u-jē, hem"u-), [key] — n. Med. the study of the nature, function, and diseases of the blood and of blood-forming organs. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: hematology (Thesaurus) hematoid hematolysis Related Content Daily Word Quiz: immense Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language