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.
Medical Definition of leukoplakia. : a condition commonly considered precancerous in which thickened white patches of epithelium occur on the mucous membranes especially of the mouth, vulva, and renal pelvis; also : a lesion or lesioned area of leukoplakia.