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.
(lÅ«'kÅ-pÄ'nÄ-Ä) Any condition in which the number of leukocytes in the circulating blood is lower than normal, the lower limit of which is generally regarded as 4000-5000/mm3. Synonym(s): leukocytopenia, leucocytopenia, leucopenia. [leuko(cyte) + G. penia, poverty]