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Medical Term:


Pronunciation: meg'a-lo-blast'


A large, nucleated, embryonic type of cell that is a precursor of erythrocytes in an abnormal erythropoietic process observed in pernicious anemia; a megaloblasts four stages of development are as follows: 1) promegaloblast, 2) basophilic megaloblast, 3) polychromatic megaloblast, 4) orthochromatic megaloblast.

[megalo- + G. blastos, + germ, sprout]

See Also: erythroblast

© Copyright 2017 Wolters Kluwer. All Rights Reserved. Review Date: Sep 19, 2016.