he·​ma·​tol·​o·​gy ˌhē-mə-ˈtä-lə-jē How to pronounce hematology (audio)
: a medical science that deals with the blood and blood-forming organs
hematologist noun

Did you know?

Blood is basic to almost all the body's functions, and a blood test can reveal more about your physical condition than almost any other kind of examination, so hematology is an important medical specialty, with many separate subjects. Since blood cells are formed in the bone marrow, the bones are one important focus for hematologists. The coagulation, or thickening, of the blood is another important subject, since coagulation is what keeps us from bleeding to death from even small wounds. And there are dozens of serious blood diseases, including anemia (a lack of red blood cells) and leukemia (cancer involving a buildup of white blood cells).

Examples of hematology in a Sentence

Recent Examples on the Web Medical personnel is awaiting histology, biopsies, cultures, blood hematology and chemistry, and toxicology testing. Antonio Planas, NBC News, 14 June 2024 Blood Shortages and Cancer Care Many cancer and hematology patients need blood transfusions as part of their treatment. Rachel Murphy, Verywell Health, 2 Feb. 2024 In 2022, the Duchess of York and her princess daughters virtually met cancer patients and nurses for the opening of the hematology ward at University College London Hospitals NHS Foundation Trust. USA TODAY, 22 Jan. 2024 There’s no question that the new gene therapy can cure the disease, according to Jeffrey Glassberg, MD, an assistant professor of emergency medicine, hematology, and medical oncology at Mount Sinai School of Medicine. Mira Miller, Verywell Health, 8 Nov. 2023 See all Example Sentences for hematology 

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'hematology.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History

First Known Use

circa 1811, in the meaning defined above

Time Traveler
The first known use of hematology was circa 1811

Dictionary Entries Near hematology

Cite this Entry

“Hematology.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/hematology. Accessed 21 Jul. 2024.

Medical Definition


variants or chiefly British haematology
plural hematologies
: a medical science that deals with the blood and blood-forming organs
hematologist noun
or chiefly British haematologist

More from Merriam-Webster on hematology

Last Updated: - Updated example sentences
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!