* Hematology: The study of blood and blood-forming organs.
* Hemoglobin: The protein in red blood cells that carries oxygen.
* Hematocrit: The percentage of red blood cells in the blood.
* Hemophilia: A genetic disorder that prevents blood from clotting properly.
* Hemorrhage: Excessive bleeding.
* Hematoma: A localized collection of blood outside of blood vessels.
* Hemodialysis: A procedure to filter waste products from the blood when the kidneys are not working properly.
* Hemolysis: The destruction of red blood cells.
These are just a few examples. There are many other words with the prefix "hema" related to the medical field and blood disorders.