| an arrangement of five objects, as trees, in a square or rectangle, one at each corner and one in the middle. |
| an extraordinary or unusual thing, person, or event; an exceptional example or instance. |
hematology he·ma·tol·o·gy (hē'mə-tŏl'ə-jē)
n.
The science of the blood and blood-producing organs.
| hematology (hē'mə-tŏl'ə-jē) Pronunciation Key
The branch of medicine that deals with the blood and blood-producing organs. |