| 释义 |
‖ coccidium|kɒkˈsɪdɪəm|
Pl. -ia.
[mod.L., on type of a Gr. *κοκκίδιον, dim. of κοκκίς, -ιδ-, dim. of κόκκος grain, berry.]
1. Bot. A spherical or hemispherical conceptacle found in the rhodospermous algæ.
1867J. Hogg Microsc. ii. i. 274 Coccidium either occurs on lateral branches or is sessile on the face of the frond. 1876Harley Mat. Med. 361 Fructification in hemispherical sessile coccidia, containing oblong spores on a central axis.
2. Zool. Formerly the name of a genus of protozoan internal parasites; now a parasite of this kind belonging to the order Coccidia, which causes disease in mammals and birds.
1886W. E. Hoyle tr. Lenckart's Parasites of Man ii. 197 (caption) Coccidia from the intestine of the domestic mouse. Ibid. 198 The spores are formed from the contents of the Coccidium, for by this name we shall henceforth designate the so-called ‘egg-shaped Psorosperms’. 1934T. W. M. Cameron Internal Parasites of Domestic Animals ii. 33 The coccidia are parasites of the epithelium of the intestine and the bile-ducts of mammals and birds. 1956― Parasites & Parasitism 268 Coccidia require a period of maturation which is generally short. 1960Farmer & Stockbreeder 16 Feb. 149/1 The majority of the invading coccidia parasites. Ibid. (Suppl.) 15 Mar. 1/1 The coccidia are normal gut habitants in the fowl. |