hypochromatosis Cytology.
(ˌhaɪpəʊkrəʊməˈtəʊsɪs)
[mod.L., f. hypo- 4 + chromato-, chromatin + -osis.]
An abnormally small amount of chromatin or number of chromosomes in a cell or nucleus.
| 1913 [see hyperchromatosis 2]. 1919 Encycl. Medica (ed. 2) VI. 311 Hypochromatosis is a deficiency in chromatin—thus nuclear hypochromatosis is the condition of the nucleus of a cell in which there is a reduction in the number of chromosomes. |