痛觉时间计：记录产生痛觉所需时间的仪器- peroxydol
- perphenazine
- perprimam
- perprimam intentionem
- perrectum
- Perrin-Ferraton disease
- Perroncito's apparatus(spirals)
- persalt
- persaltum
- Persantine
- persecundam
- persecundam intentionem
- perseveration
- persister
- persona
- personalistics
- personality
- personologic
- personology
- perspiratio
- perspiration
- persuasion
- persulfate
- persulfide
- persulfuric acid