〔前缀〕意为毫微，相联词干单位的十亿分之一(10－9)；现为前缀nano-所取代- perikaryon
- perikeratic
- perikyma
- perikymata
- perilabyrinth
- perilabyrinthitis
- perilaryngeal
- perilaryngitis
- perilemma
- perilenticular
- perilesional
- periligamentous
- perilobar
- perilobulitis
- perilymph
- perilympha
- perilymphadenitis
- perilymphangeal
- perilymphangitis
- perilymphatic
- perimastitis
- perimedullary
- perimeningitis
- perimeter
- perimetric