a large erythroblast (precursor to a red blood cell) that appears in the blood during anemia[close window

The type of red cell precursor found in pernicious anemia. This differs from the normal erythrocyte precursor (normoblast) in that the megaloblast is larger and the nuclear chromatin has a fine meshwork or scroll design.

An abnormally large immature erythrocyte that develops in large numbers in the bone marrow.