壶吸虫属：吸虫的一属。甲胄吸虫(S.armatum)和台湾吸虫(S.formosanum)为鸟类寄生虫，但曾有人体实验性感染的报告- abreaction
- Abrikosov's(Abrikossoff's) tumor
- abrin
- abrism
- abrosia
- abruptio
- Abrus precatorius L.
- abs-
- abscess
- abscessus
- abscise
- warbles
- 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