microcytosisn.
/ˌmʌɪkrə(ʊ)sʌɪˈtəʊsɪs/, U.S. /ˌmækrəˌsaɪˈtoʊsəs/ Medicine.
The presence of an abnormally large number of microcytes in the blood; reduction in the size of red blood cells.
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the world > health and disease > ill health > a disease > disorders of internal organs > disorders of blood > [noun] > disorders of red cells
microcythaemia1876
microcytosis1885
haemolysis1890
macrocytosis1893
macrocythaemia1894
anisocytosis1903
sickling1923
hyperchromasia1929
hypochromasia1929
hyperchromia1931
hypochromia1931
spherocytosis1933
protoporphyria1956
1885 A. H. Buck Ref. Handbk. Med. Sci. I. 182/1 The alterations in the size and shape of the corpuscles have been termed pæcilocytosis [sic] by Quincke, microcytosis by others.
1938 H. Downey Handbk. Hematol. III. xxxi. 2286 One cannot fail to notice that the average size of the red cells is less than normal; there is a distinct microcytosis.
1952 Ann. Eugenics 16 300 Smaller erythrocyte volume (microcytosis).
1962 Lancet 12 May 1004/2 Clinical and hæmatological examinations..showed anæmia with anisocytosis, microcytosis, macrocytosis, and reticulocytosis.
1987 D. J. Weatherall et al. Oxf. Textbk. Med. (ed. 2) II. xix. 4/2 Disorders of the red cell..include..a reduction in size or microcytosis.
1993 S. J. Ettinger Pocket Compan. Textbk. Vet. Internal Med. cxiii. 733 This leads to smaller daughter cells and contributes to development of microcytosis.
1999 National Med. Jrnl. India 12 266 Microcytosis is a common red cell change seen in anaemias of varied aetiology. These include iron deficiency, thalassaemia, chronic disease and sideroblastic anaemias.
This entry has been updated (OED Third Edition, December 2001; most recently modified version published online March 2022).
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n.1885