a disease caused by failure of the adrenal glands: it is characterized by anemia, weakness, low blood pressure, and brownish discoloration of the skin
See Addison's disease in American Heritage Dictionary 4
(ădˈĭ-sənz)
noun
A disease caused by partial or total failure of adrenocortical function, which is characterized by a bronzelike pigmentation of the skin and mucous membranes, anemia, weakness, and low blood pressure.