- Zaglas ligament
- Zambesi ulcer
- zanaloin
- Zander's system
- Zang's space
- Zappert's counting cell
- Zaufal's sign
- zea
- zedoaria
- zeism
- Zeiss's gland
- Zeissel's layer
- Zeissian sty, stye
- zeist
- Zeller's test
- zelotypia
- Zelsel's test
- Zem Zem Springs
- zematol
- Zenker's Degeneration