- primary ramus
- primary enuresis
- primary file
- paper gold
- pseudophloem
- perisperm
- peritoneoscopy
- progressive spinal muscular atrophy
- psychi inertia
- priest_penitent privilege
- patrai
- patriarchal cross
- phycophage
- pteridospermopsida
- peritoneal lavage
- pansinusitis
- phlebectasia
- prostaticovesiculectomy
- posthole
- procto_colectomy
- photochomical reaction
- pulse repetition frequency
- pulse amplitude
- photosystem
- phytochemistry
- photolithography
- pulmonary alveolar proteinosis
- peter seamus o'toole
- pulse generator
- photolytic change
- phat
- purine antagonist
- psychic pathology
- psychogenic syncope
- psychologic development
- pertaining to battle
- pulse generation
- president truman
- preprandial
- polyoma virus
- pulmonary pleura
- pulmonary plexus
- polygyny
- pius vii
- paralanguage
- piperocaine
- piperocaine hydrochloride
- pyrostat
- pararrhythmia
- paul bunyan