pneumocystis
/ˌnjuːməʊˈsɪstɪs/noun
mass noun
1- Medicine a parasitic protozoan that can cause fatal pneumonia in people affected with immunodeficiency disease【医】（肺炎）肺囊虫。
1.1
- Pneumocystis carinii, phylum Sporozoa.拉丁名Pneumocystis carinii,孢子虫门。