| 释义 |
hyperchromasia|ˌhaɪpəkrəʊˈmeɪzɪə|
Also in anglicized form hyperchromasy |-ˈkrəʊməsɪ| (rare).
[mod.L., f. hyper- 5 + Gr. χρῶµα, χρώµατ- colour (in sense 2 repr. chromatin): see -ia1.]
1. Med.
a. Excessive coloration or pigmentation of the skin.
1889Cent. Dict., Hyperchromasia, a pathological condition marked by excess of pigment. 1908Practitioner Aug. 349 A condition known as hyperchromasia, in contradistinction to achromasia, or leucodermia.
b. = hyperchromia.
1929R. B. H. Gradwohl tr. Schilling's Blood Picture ii. 107 Special, generally designated erythrocytic blood pictures... Hyperchromasia: generally increased pigmentation. 1966J. W. Linman Princ. Hematol. iii. 60 Large or excessively thick cells that stain more darkly than normal are described as being hyperchromatic or as displaying hyperchromasia.
2. Cytology. The condition, in a cell or nucleus, of having an abnormally large amount of chromatin.
1930Med. Jrnl. Austral. 22 Feb. 244/1 A detailed examination of carcinoma cells shows that hyperchromasy is the dominant cytological feature of these components. 1948Amer. Jrnl. Path. XXIV. 1200 Cytologic descriptions of tumors are limited to generalities such as..hyperchromasia of nucleus. 1971Nature 31 Dec. 547/2 The individual tumour cells were more rounded with nuclear hyperchromasia. |