原始菌族：硝化菌科的一族，它们通过氧化简单碳和氢的无机化合物获取生活所需能量- peripneumonia
- peripneumonitis
- peripolar
- peripolesis
- periporitis
- periportal
- periproctic
- periproctitis
- periprostatic
- periprostatitis
- peripylephlebitis
- peripyloric
- periradicular
- perirectal
- perirectitis
- perirenal
- perirhinal
- perirhizoclasia
- perisalpingitis
- perisalpingo-ovaritis
- perisalpinx
- perisclerium
- periscopic
- perisigmoiditis
- perisinuitis