犬尿氨酸，犬尿素：一种结晶性含氮碱基，首先从犬尿中分离获得，系色氨酸的一种代谢物，见于微生物和正常动物尿中，是犬尿喹啉酸的前体，也是色氨酸变为烟酸的中间体。烟酸是维生素B复合物的一个成分- Zanosar
- Zappert's chamber
- Zarontin
- Zaroxolyn
- Zaufal's sign
- Zea
- zeatin
- zeaxanthin
- zedoary
- Zeeman effect
- zein
- zeinolysis
- zeinolytic
- zeiosis
- zeisian gland, stye
- zeism
- zeismus
- zeistic
- Zellweger syndrome
- zenkerism
- zenkerize
- Zenker's crystals, degeneration (necrosis), diverticulum
- Zenker's fixative (fluid, solution)
- zeolite
- zeoscope