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.
islets of Langerhans - cellular masses composed of different cell types that comprise the endocrine portion of the pancreas and are the source of insulin and glucagon. Synonym(s): islet tissue; Langerhans islands; pancreatic islands; pancreatic islets. Langerhans cell granulomatosis. Langerhans cells - dendritic clear cells in the epidermis that are active participants in cutaneous delayed hypersensitivity. Langerhans granule - a small membrane-bound granule first reported in Langerhans cells of the epidermis. Langerhans cells. LanÂ·gerÂ·hans cells. Dendritic clear cells in epidermis, containing distinctive granules that appear rod- or racket-shaped in section, but lacking tonofilaments, melanosomes, and desmosomes.