[ˌpærəˈsistəli]
并行收缩：一种心律不齐，系两个节律不同的独立起搏点同时在起作用所致；照例，两个起搏点之一总是窦房结(正常的起搏点)，另一个异位点在心室。因而两个点互不影响- foraminulum
- foration
- force
- forceps
- forcipate
- Forcipomyia
- forcipressure
- Fordyce's disease, granule (spot)
- forearm
- forebrain
- foreconscious
- forefinger
- forefoot
- foregilding
- foregut
- forehead
- foreign
- forekidney
- Forel's commissure,decussation,field (areas)
- forensic
- foreplay
- fore-pleasure
- foreskin
- Forestier's disease
- foretop