| n. | 1. | (Med.) A disease due to the presence of the parasites Agchylostoma duodenale, Uncinaria (subgenus Necator) americana, or allied nematodes, in the small intestine. When present in large numbers they produce a severe anæmia by sucking the blood from the intestinal walls. Called also miner's anæmia, tunnel disease, brickmaker's anæmia, Egyptian chlorosis. |