noun
a chronic progressive anemia of older adults; thought to result from a lack of intrinsic factor (a substance secreted by the stomach that is responsible for the absorption of vitamin B12)
• Syn: ↑pernicious anemia, ↑pernicious anaemia, ↑malignant anaemia
• Hyponyms: ↑megaloblastic anemia, ↑megaloblastic anaemia, ↑metaplastic anemia, ↑metaplastic anaemia
Useful english dictionary. 2012.