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单词 piroplasma
释义

piroplasman.

Brit. /pʌɪrəʊˈplazmə/, U.S. /ˌpaɪroʊˈplæzmə/
Inflections: Plural piroplasmas, piroplasmata.
Origin: A borrowing from Latin. Etymon: Latin Piroplasma.
Etymology: < scientific Latin Piroplasma (see below) < classical Latin pirum pear n. + -o- connective + plasma n.Proposed as a replacement genus name for Pyrosoma , which was preoccupied (compare Pyrosoma n.). So called in allusion to the pyriform shape of the trophozoites seen in red blood cells.
Microbiology and Veterinary Medicine.
= piroplasm n. Also (in form Piroplasma): a former genus of protozoans which includes piroplasms (now called Babesia).
ΚΠ
1895 W. H. Patton in Amer. Naturalist 29 498 The name of the southern or lenic cattle-fever parasite.—The generic name [sc. Pyrosoma] given by Drs. Smith and Kilborne, having been previously used in Zoology, must be dropped. I propose the name Piroplasma to replace it.
1908 Practitioner Feb. 228 Rocky Mountain Spotted Fever. Ricketts has re-investigated this disease, in which..Wilson and Chowning claimed to have discovered piroplasmata, and to have shown that it is transmitted by a tick.
1920 Science 24 Dec. 592/2 This..includes representatives of all species that are known to transmit piroplasmas.
1940 Sci. Monthly Jan. 84/1 The treatment of piroplasma infection in dogs.
1970 K. V. F. Jubb & P. C. Kennedy Pathol. Domest. Animals (ed. 2) I. iv. 317/2 The family Babesidae contains the one genus Babesia (syn. Piroplasma) but a large number of species.
1991 Science 22 Mar. 1507/2 Spotted fever, they concluded, was a piroplasma carried by ground squirrels that infected ticks that then transmitted the disease by biting humans.
This is a new entry (OED Third Edition, June 2006; most recently modified version published online March 2022).
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n.1895
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