无膜泛成孢子虫亚目：微孢子虫纲(class Microsporea)微孢子虫目(order Microsporida)中的寄生性原虫亚目，一般皆无泛成孢子细胞膜，如有亦为残遗，而决不会持续为孢子体囊，成孢子细胞以双核最为常见；代表属有脑胞内原虫属(Encephalitozoon)，格留虫属(Glugea)和微粒子虫属(Nosema)- prodrome
- prodromic
- pro-drug
- product
- productive
- proecdysis
- proemial
- proencephalon
- proencephalus
- proenzyme
- proerythroblast
- proerythrocyte
- proestrogen
- proestrum
- proestrus
- Proetz position, treatment
- profadol hydrochloride
- profenamine
- proferment
- professional
- Professional Standards Review Organization
- profibrinolysin
- Profichet's syndrome (disease)
- profile
- proflavine