[kənˈtæktənt]
接触物：一种变应原，人和动物接触1～2次后，会发生表皮迟发性接触型过敏反应- per os
- perosis
- perosomus
- perosplanchnia
- perosseous
- perotic
- peroxidase
- peroxide
- peroxisome
- peroxy-
- peroxyacetic acid
- peroxydol
- perphenazine
- perprimam
- perprimam intentionem
- perrectum
- Perrin-Ferraton disease
- Perroncito's apparatus(spirals)
- persalt
- persaltum
- Persantine
- persecundam
- persecundam intentionem
- perseveration
- persister