| Acronym | Meaning |
| ZFAAS | Zeeman Furnace Atomic Absorption Spectroscopy |
| ZFS | Zero-field Splitting |
| ZHE | Zero-headspace Extractor (used In TCLP Determinations) |
| ZHEV | Zero-Headspace Extraction Vessel |
| ZI | Zero Intercept |
| ZIA | Zone Immunoassay |
| ZID | Zone Of Initial Dilution |
| ZINDO | Zerner's Intermediate Neglect Of Differential Overlap |
| ZIP | Zinc Impurity Photodetector |
| ZLC | Zero Length Column |
| ZLS | Zeeman Laser Scattering |
| ZME | Zeolite-modified Electrode |
| ZMR | Zone-melting Recrystallization |
| ZOAO | Zero Overlap Of Atomic Orbital Approxn. |
| ZOLZ | Zero Order Laue Zone |
| ZORA | Zeroth-order Regular Approximation |
| ZPC | Zero Point Of Charge |
| ZPC | Zero-point (energy) Corrections |
| ZPE | Zero-point Energy |
| ZPL | Zero-phonon Line |
| ZPP | Zn Protoporphyrin (lead Poisoning Indicator) |
| ZPVE | Zero-point Vibrational Energy |
| ZQC | Zero-quantum Coherence |
| ZQS | Zero-quantum Spectroscopy |
| ZRL | Zero Risk Level |
| ZRPA | Zero-radius Potential Approximation |
| ZRPA | Zero-range Potential Approximation |
| ZSM | Zeolite Socony Mobil |
| ZSR | Zdanovskii-Stokes-Robinson [model] |
| ZST | Zero Strength Temperature |
| ZTA | Zirconia-toughened Alumina |
| ZTS | Z Transition State [z = Nuclear Charge] (method For Calcg. Isoelectronic Energy Differences And Electrostatic Potentials For A |
| ZVI | Zero-valent Iron |