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.
1 Parenchyma cells are living cells that have functions ranging from storage and support to photosynthesis and phloem loading (transfer cells). 2  Apart from the xylem and phloem in their vascular bundles, leaves are composed mainly of parenchyma cells.ell types [edit]. 1  Parenchyma cells are living cells that have functions ranging from storage and support to photosynthesis and phloem loading (transfer cells). 2  Collenchyma cells â collenchyma cells are alive at maturity and have only a primary wall.