前牙类，沟牙类：一类有小而固定毒牙的毒蛇，牙上有沟而非中空，因而毒牙必须咬在伤口内，毒素才能达到深层组织中。例如印度响尾蛇和北美珊瑚蛇- fosfonet sodium
- Foshay's reaction, serum, test
- fospirate
- fossa
- fossae
- fossette
- fossula
- fossulae
- fossulate
- Foster Kennedy
- Fothergill's disease (sore throat),neuralgia,pill
- Fothergill's operation
- Fouchet's test
- foudroyant
- foulage
- foulbrood
- foundation
- founder
- fourchette
- Fourneau 309
- Fournier's gangrene(disease), etc.
- fovea
- foveate
- foveation
- foveola