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a term originally used for any type of nucleated erythrocyte, but now usually limited to one of the nucleated precursors of an erythrocyte, i.e. one of the developmental stages in the erythrocytic series, in contrast to a megaloblast. In this usage, it is called also normoblast.
basophilic erythroblast a nucleated precursor in the erythrocytic series, preceding the polychromatophilic erythroblast and following the proerythroblast; the cytoplasm is basophilic, the nucleus is large with clumped chromatin, and the nucleoli have disappeared. Called also basophilic normoblast.
orthochromatic erythroblast see normoblast.
polychromatic erythroblast (polychromatophilic erythroblast) see normoblast.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.
Orthochromatic normoblast. See: normoblast.
Farlex Partner Medical Dictionary © Farlex 2012
metarubricyteAn obsolete term for an enlarged orthochromatic normoblast seen in megaloblastic anaemia.
Segen's Medical Dictionary. © 2012 Farlex, Inc. All rights reserved.
Orthochromatic normoblast; the oldest type of nucleated red cell.
Medical Dictionary for the Health Professions and Nursing © Farlex 2012