ZAA Zeeman Atomic Absorption ZAB Zone Absolute Barrier ZAC Zero Administration Client ZAD Zanzibar Association of the Disabled ZAD Zero and ADd ZAE Zone of Absolute Exclusion ZAF Zambian Air Force ZAF Zero Alignment Feature ZAF Zimbabwe Air Force ZAF Zinc & Ash Free ZAF Zinc Application Framework ZAF Zoes Ark Foundation ZAF Zombie Assault Force ZAF Zone Assistance Fund ZAF Zoo Administration Framework ZAF Zoom Audio File ZAG Zope Administrator's Guide ZAI Zero Administration Initiative ZAK Zero Administration Kit ZAL Zero Asset List ZAM Zone Access Monitor ZAP Zed Attack Proxy ZAP Zero and Add Packed ZAP Zone Axis Pattern ZAQ Zone Access Query ZAR Zeus Acquisition RADAR ZAS Zaire Aero Service ZAT Zone Advancement Tournament ZAV Zero Asset Valuation ZAW Zero Administration for Windows ZBA Zero Bias Anomaly ZBB Zero-Based Budget ZBC Zimbabwe Broadcasting Corporation ZBD Zenithal Bistable Display ZBE Zaporozhye Banner Exchange ZBF Zaphod Beeblebrox the Fourth ZBM Zone Barrier Monitoring ZBN Zoning Bylaw Number ZBQ Zero Balance Query ZBR Zero Bug Release ZBR Zone Bit Recording ZBS Zone-Based Shipping ZBT Zero Balance Transfer ZBU ZIP Back-Up ZCA Zone Control Authority ZCA Zope Component Architecture ZCB Zero Coupon Bonds ZCC Zero Core Contribution ZCD Zero Cross Detector ZCF Zone of Cease Fire ZCG Zeolite Crystal Growth ZCI Zambia Copper Investments ZCI Zoom Camera In ZCK Zero ChecK ZCM Zone Center Management ZCN Zinc Coated Nut ZCO Zero-Cross-Over ZCO Zoom Camera Out ZCP Zen Center of Pittsburgh ZCP Zero-Cross Point ZCQ Zero-Cross Qualifier ZCR Zero-temperature Coefficient Resistor ZCS Zero Code Suppression ZCU Zimbabwe Cricket Union ZCV Zone Center Value ZCV Zortech Class Viewer ZCW Zinc Coated Washer ZCX Zero Count eXchange ZCY Zirconium-Cerium-Yttrium ZDC Zero-Degrees Calorimeter ZDD Zero Defect Design ZDD Zero-suppressed Decision Diagram ZDE Zero Defect Engineering ZDI Zeeman-Doppler Imager ZDI Zero Day Initiative ZDL Zero Delay Lockout ZDO Zero Differential Overlap ZDP Zero Defect Program ZDP Zero Downtime Patching ZDQ Zero Discount Quantity ZDS Zenith Data Systems ZDT Zero-Ductility Transition ZDU Ziff Davis University ZDX ZipLip Data eXchange ZDY Zinc Detection and Yield ZDZ Zero Ductility Zone ZEA Zero Energy Assembly ZEB Zenith-Enhanced Backscatter ZEF Zero Extraction Force ZEI Zinder Engineering, Inc. ZEJ Zero Energy Junction ZEN Zero Effort Network ZEO Zope Enterprise Object ZER Zero Emissions Record ZEV Zero Emission Vehicle ZEX Zero Emissions eXperimental ZFC Zermelo-Fraenkel Set Theory with the Axiom of Choice ZFC Zero Failure Criteria ZFD Zanesville Fire Department ZFE Zsnes Front End ZFF Zero Forcing Function ZFH Zinc Finger Homeodomain ZFR Zero Force Response ZFS Zero-Field Splitting ZFS Zettabyte File System ZFS Zone Field Selection ZFW Zero Fuel Weight ZFX Zinc Finger, X-linked ZFY Zinc Finger, Y-linked ZGC Z Garbage Collector ZGE Zero Gravity Effect ZGF Zimmer Gunsul Frasca [Partnership] ZGG Zero-Gravity Generator ZGH Zero-Gravity Harmonic ZGI Zebrafish Gene Index ZGM Zero Gravity Multimedia ZGN Zero G Network ZGR Zero Gap Response ZGS Zero-Gradient Synchrotron ZGT Zero-Gravity Trainer ZGY Zirconia Grain Yield ZHD Zero Harmonic Distortion ZHE Zero-Headspace Extraction ZHF Zodiacal History File ZHQ Zone HeadQuarters ZHR Zenith Hourly Rate ZHS Zillah High School ZHT Zum Hingst Technologies ZHX Zone Heater eXperiment ZHY Zirconium Hydride Yield ZIA Zero-Interaction Authentication ZIA Zinc Ion Availability ZIC Zaurus Internet Chat ZID Zone of Initial Dilution ZIF Zero Insertion Force ZIG Zionist Invisible Government ZIG Zoster Immune Globulin ZIL ZFS Intent Log ZIL Zork Implement Language ZIL Zork Implementation Language ZIM Zonal Interdiction Missile ZIP Zig-zag Inline Package ZIP Zone Improvement Plan [Code] ZIP Zone Information Protocol ZIP Zoster Immune Plasma ZIQ Zaurus Intelligence Quotient ZIS Zone Information Socket ZIT Zone Information Table ZIT Zone Information Test ZIW Zany Interactive Wrestling ZJA Zumpano, Johnson and Anderson ZJC Zimbabwe Junior Certificate ZJH Zimbabwe Journal of the Humanities ZJQ Zagreb Jazz Quartet ZJU ZheJiang University ZJV Zambezi Joint Venture ZKC Zimbabwe Kennel Club ZKD Zanshin Karate Dojo ZKP Zero Knowledge Proof ZKS Zero Knowledge Site ZKU Zonguldak Karaelmas University ZKW Zero KiloWatt ZKX ZixIt Key eXport ZLA Zone with Limited Access ZLB Z-Line Business ZLB Zero Lower Bound ZLC Zero Length Column ZLE Zero Latency Enterprise ZLH Zigzag LeafHopper ZLJ Zambia Law Journal ZLL Zero Length Launcher ZLO Zacchaeus Learning Opportunities ZLP Zero Loss Plan ZLS Zeeman Laser Scattering ZLU Zoning and Land Use ZLV Zero-Length Vector ZLX Zeta Lambda Chi [!] ZMA Zone Multicast Access ZMB Zancudo Military Base ZMB Zero Memory Bytes ZMB Zero Momentum Bias ZME Zeolite-Modified Electrode ZMG Zoom Media Group ZMH Zone Mail Hour ZMI Zion Ministerial Institute ZMI Zope Management Interface ZMM Zen Mountain Monastery ZMO Zone Management Officer ZMQ Zeke Martin Quartet ZMR Zebra Mussel Research ZMS Zero Mechanical State ZMU Zebra Mussel Updates ZMV Zucca Mountain Vineyards ZMW Zanotti, Mrasz and Weber ZNA Zone of No Access ZNB Zimmerman, Nolan, & Braun, LLC ZNE Zhuhai Nation Enterprise ZNF Zero Name Fragment ZNL Zero Normal Load ZNM Zoneworx Network Module ZNN Zamunda News Network ZNO ZiNc Oxide ZNP Zanzibar Nationalist Party ZNT Zip Network Technologies ZNX ZiNc eXchange ZOA Zionist Organization of America ZOA Zone Of Avoidance ZOC Zap-O-Comm ZOC Zone Of Control ZOD Zero-Order Design ZOE Zinc Oxide and Eugnol ZOF Zone of Optimal Function ZOG Zillions Of Games ZOG Zionist Occupational Government ZOH Zero Order Hold ZOI Zone Of Incorporation ZOL Zero OverLap ZOL ZFS On Linux ZOM Zephyrs Of Manipulation ZON Zig Object Notation ZOO Zone Of Occupation ZOP Zero Oops Policy ZOP Zero-OverPricing ZOQ Zero On Cue [!] ZOS Zone Of Separation ZOU Zimbabwe Open University ZPA Zero-Period Acceleration ZPC Zero Point of Charge ZPD Zone of Peripheral Development ZPE Zero-Point Energy ZPF Zero Power Finder ZPG Zero Population Growth ZPI Z-dependent Protease Inhibitor ZPL Zero-Phonon Line ZPL ZFS POSIX Layer ZPL Zope Public License ZPM Zero Point Module ZPP Zinc Proto-Porphyrin ZPQ Zuzu's Petals Quarterly ZPR Zero Power Resistance ZPT Zero Power Test ZPT Zope Page Templates ZPU Zarka Private University ZPV Zoomed Port Video ZPW Zero Page Write ZQC Zero-Quantum Coherence ZQD Zero Quality Defects ZQE Zero Queue Extension ZQF Zero Quantum Force ZQG Zero Quantum Gap ZQL Zero Quality Level ZQM Zero Quality Management ZQP Zero Quantity Point ZQR Zero Quality Rejects ZQS Zero-Quantom Spectroscopy ZQU Zhao Qing University ZQV Zero Quantum Value ZQX Zero Quantum eXchange ZRA Zoo Registrars Association ZRE Zero Rate Error ZRF Z ReFerence ZRF Zillions [of Games] Rules File ZRI Zenith Realty Investments ZRL Zero Risk Level ZRM Zmanda Recovery Manager ZRN ZiRconium Nitride ZRO Zero Rate Offset ZRP Zone Routing Protocol ZRR Zion River Resort ZRS Zope Replication Services ZRT Zero Reaction Tool ZRV Zero Relative Velocity ZRX Zero Risk eXchange ZSB Zero Surface Brighthness ZSC Zero Semantic Comment ZSE Zagreb Stock Exchange ZSF Zirakzadeh Science Foundation ZSH Z SHell ZSI Zambia Standards Institute ZSJ Zoological Society of Japan ZSK Zoological Society of Korea ZSL Zero Slot LAN ZSL Zombie Sign Language ZSL Zoological Society of London ZSM Zone Specific Maintainence ZSN Zwicky SuperNova ZSO Zoroastrian Society of Ontario ZSP Zero Safety Problems ZST Zone Standard Time ZST Zoom Stereo Trinocular ZSV Zone Settling Velocity ZSX Zinc Sulfide eXchange ZTA Zeta Tau Alpha ZTB Zap The Bastards ZTC Zero Temperature Coefficient ZTC Zero Tolerance to Circumstances ZTD Zope [Corporation] Threaded Discussion ZTI Zero Technology Insertion ZTK Zope Tool Kit ZTL Zero To Lightspeed ZTL Zero Touch Linux ZTM Zone Temperature Monitor ZTN Zionist Terror Network ZTO Zone Transportation Office ZTR Zero Turning Radius ZTS Z Transition State ZTT Zang Tumm Tumm ZTU Zero Tolerance Unity ZTX Z-series True eXcellence ZTZ Zero Tolerance Zone ZUC Zaurus Unit Converter ZUI Zooming User Interface ZUJ Zimbabwe Union of Journalists ZUM Zimbabwe Unity Movement ZUT Zeta Upsilon Tau ZVA Zichydorf Village Association ZVC Zero-Velocity Curve ZVF Zero-Velocity Fading ZVI Zero Voltage Inversion ZVJ Zener Voltage Junction ZVL Zero Velocity Line ZVM Zenith Video Monitor ZVQ Zope Visual Query ZVR Zener Voltage Regulator ZVS Zero Voltage Switching ZVT Zero Voltage Transition ZVX Zygocactus Virus X ZWA Zero Waste America ZWC Zero Word Count ZWF Zatarok Wrestling Federation ZWG Zone Working Group ZWJ Zero Width Joiner ZWL Zero Wait Line ZWN Zero Width Non-joiner ZWQ Zero Wait Queue ZWR Zero Weight Restrictions ZWS Zero Wait State ZWS Zero Width Space ZWS Zeus Web Server ZWT Zero Wait Time ZWV Zero Wave Velocity ZWW Zonal Westerly Wind ZXE Zeta Chi Epsilon [!] ZXF [Sinclair] ZX Format ZXI Zeta Chi Iota [!] ZXK ZyriX Knight ZXL Zirconium based Cross Linker [!] ZXM [Sinclair] ZX Magazine ZXO Zenith Cross-Over [!] ZXP Zero Transmitter Power [!] ZXW [Sinclair] ZX World ZXZ Zeta Chi Zeta [!] ZYA Zimbabwe Youth in Alliance ZYA Zomi Youth Association ZYA Zoroastrian Youth Association ZYB Zionist YearBook ZYC Zuercher Yacht Club ZYD Zurn Yacht Design ZYF Zeliangrong Youth Front ZYL Zion Youth League ZYO Zion Youth Organization ZYP Zefkrome Yarn Program ZYS Zavala Young Scientists ZYW Zirconia Yttria-stabilized Suspension in Water ZYX Z-axis, Y-axis, X-axis ZYY Zion Young Youth ZZA Zamak Zinc Alloy ZZB Ziv-Zakai-Type Bound ZZC Zero-Zero Conditions ZZD Zig-Zag Diagram ZZE Zeeba Zeeba Eata ZZE Zone-by-Zone Encryption ZZF Zinema Zombie Fest ZZG Zig Zag Gear ZZL Zig Zag Lighting ZZM Zig-Zag Mask [Switching] ZZN Zap Zone Network ZZO Zero Zero One ZZO Zig Zag Oscillator ZZQ Zig Zazz Quintet ZZR Zig-Zag Riveting ZZS Zimbabwe Zambezi Safari ZZS Zoobilie Zoo Song ZZT ZZ Top ZZU Zig Zag Urns ZZV Zero-Zero Visibility ZZW Zero-Zero Weather ZZZ Ze Z Zone