菠菜蛋白，菠菜素：得自菠菜叶细胞胞浆的一种蛋白质，不溶于水和盐溶液，但溶于稍稍过量的酸或碱中- freckle
- Fredet-Ramstedt operation(Pierre Fredet)
- freemartin
- freeze-cleaving
- freeze-drying
- freeze-etching
- freeze-fracturing
- freeze-substitution
- Freiberg's infraction
- Frei's antigen,bubo,disease,test
- fremitus
- frena
- frenal
- French
- frenectomy
- Frenkel's movements(treatment)
- frenoplasty
- frenosecretory
- frenotomy
- frentizole
- frenula
- frenuloplasty
- frenulum
- frenum
- frequency