| Pronunciation: | | pur'nishus u'neemeeu
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 WordNet Dictionary |
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| | Definition: | |
[n] 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) |
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| | Synonyms: | | malignant anaemia, malignant anemia, pernicious anaemia |
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| | See Also: | | anaemia, anemia, megaloblastic anaemia, megaloblastic anemia, metaplastic anaemia, metaplastic anemia |
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| Medical Dictionary |
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| | Definition: | |
- A type of anemia (low red blood cell count) caused by the body's inability to absorb vitamin B12.
- A particular form of anemia caused by inability to absorb vitamin B12 from the intestinal tract.
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| Biology Dictionary |
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| | Definition: | | This is anemia due to the production of an autoantibody against the parietal cells and a blocking antibody that blocks the binding of vitamin B12 to the intrinsic factor. A third autoantibody blocks the absorption of the B12-intrinsic factor complex . Megaloblastic anemia results from the lack of B12. |
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