| Substance | Abbreviation | Systematics | Provings |
| Zalcitabinum Zalcitabine |
Zalcita | Synthetic Drugs |
|
| Zaluzianskya capensis |
Zalu-c | Scrophulariaceae |
|
| Zamzam Aqua |
Zam-aq | Aquae mineraliae |
|
| Zanamivirum Zanamivir |
Zanam | Synthetic Drugs |
|
| Zantedeschia aethiopica Calla lily |
Zant-ae | Araceae |
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| Zantedeschia albomaculata Spotted arum lily |
Zant-a | Araceae |
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| Zanthoxylum tingoassuiba |
Xan-t | Rutaceae |
|
| Zapoteca tetragona |
Zapo-t | Mimosaceae |
|
| Zea mays pabuli Fodder Maize |
Zea-m | Gramineae/ Poaceae |
|
| Zea mays/ Pollen maydis Maize Pollen |
Zea-m-po | Gramineae/ Poaceae |
|
| Zea mays/ Stigmata maydis Maize |
Zea-m | Gramineae/ Poaceae |
|
| Zenaida macroura Mourning dove |
Zena-m | Columbidae |
|
| Zephyranthes rosea Cuban zephyrlily |
Zephy-r | Amaryllidaceae |
|
| Zidovudinum Zidovudine |
Zidov | Synthetic Drugs |
|
| Zincum aceticum Acetate of Zinc |
Zinc-acet | Aliphatic Carbon Compounds |
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