anisochromasia

The unequal distribution of hemoglobin in the red blood cells, such that the periphery is pigmented and the central region is virtually colorless, as observed in films of blood from persons with certain forms of anemia caused by deficiency of iron; normal red blood cells show mild a. because of their biconcave shape. [aniso- + G. chroma, color]

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an·iso·chro·ma·sia (an-ĭ″so-kro-maґzhə) [aniso- + Gr. chrōma color] a condition in which only the peripheral zone of an erythrocyte is colored; seen in some forms of anemia. Called also anisochromia.