DEFINITION of 'Windfall Tax'. A tax levied by governments against certain industries when economic conditions allow those industries to experience above-average profits. Windfall taxes are primarily levied on the companies in the targeted industry that have benefited the most from the economic windfall, most often commodity-based businesses.
acute leukemia leukemia in which the involved cell line shows little or no differentiation, usually consisting of blast cells; two types are distinguished, acute lymphoblastic leukemia and acute myelogenous leukemia. acute granulocytic leukemia acute myelogenous leukemia.
The other cell line, the myeloid, leads to the development of platelets, red blood cells, neutrophils and other types of white blood cells. In the myeloid cell line, the term blast cells refers to myeloblasts or myeloid blasts. These are the very earliest and most immature cells of the myeloid cell line.