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Noun: malignant anemia
Usage: N. Amer (elsewhere: malignant anaemia)
  1. 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)
    - pernicious anemia [N. Amer], pernicious anaemia [Brit, Cdn], malignant anaemia [Brit, Cdn]

Type of: anaemia [Brit, Cdn], anemia [N. Amer]