What are examples of landforms? A: The four main types of landforms are mountains, plateaus, plains and hills. A landform is defined as any natural feature on the Earth's surface, which incl... Full Answer >
Definition of leukopenia. : a condition in which the number of white blood cells circulating in the blood is abnormally low.
Lack; deficiency: leukopenia. -penia. a combining form meaning âlack, deficiency,â used esp. to form nouns denoting a deficiency in the blood of a factor specified by the initial element: leukopenia. [< Greek penÃ­a poverty, need]