原鞭毛〔虫〕目：本目原虫通常为小型原虫，属动物鞭毛虫纲，鞭毛亚纲。包括锥虫科(Trypanosmatidae)、隐鞭虫科(Cryptobiidae)和波豆虫科(Bodonidae)。同Kinetoplastida- Warburg's coenzyme
- ward
- warfarin
- Waring's method (system)
- Warren's fat columns,incision
- wart
- Wartenberg's disease
- wash
- wasp
- wasserhelle
- Wassermann-fast
- Wassermann test (reaction)
- waste
- water
- water-borne
- water brash
- Waterhouse-Friderichsen syndrome
- watermelon
- waters
- watershed
- Watkins' operation
- Watson,
- Watson-Crick helix
- Watsonius watsoni
- Watson-Schwartz test