| ADC | Analog to Digital Converter |
| AIM | Attitude Information Management |
| AIP | Aeroshell Instrumentation Package |
| APXS | Alpha Proton X-Ray Spectrometer |
| ASCII | American Standard Code for Information Interchange |
| ASI/MET | Atmospheric Structure Instrument/Meteorology Package |
| BTC | Block Truncation Coding |
| CAHV | Camera model described by four vectors C, A, H and V |
| CAHVOR | Camera model CAHV which accounts for CCD and non-linear distortions |
| CBE | Current Best Estimate |
| CCD | Charge-Coupled Device |
| CD-ROM | Compact Disc - Read Only Memory |
| CD-WO | Compact Disc - Write Once |
| c.g. | center of gravity |
| CODMAC | Committee On Data Management And Computation |
| COSPAR | Committee On Space Research |
| CRSR | Center for Radiophysics and Space Research |
| dB | Decibel |
| DBMS | Database Management System |
| DCT | Discrete Cosine Transform |
| DDR | Derived Data Record |
| DN | Data Number or Digital Number |
| DOS | Disc Operating System |
| DPW | Data Preparation Workbook |
| DSN | Deep Space Network |
| E&H | Engineering and Health |
| EDL | Entry, Descent, and Landing |
| EDR | Experiment Data Record |
| EEPROM | Electronically Erasable Programmable Read Only Memory |
| EH&A | Engineering, Housekeeping, and Accountability |
| EOF | End of File |
| EST | Eastern Standard Time |
| ETR | Eastern Test Range |
| FOV | Field of View |
| FTP | File Transfer Protocol |
| FY | Fiscal Year |
| GEM | Graphite Epoxy Motor |
| GMT | Greenwich Mean Time |
| HFS | Hierarchical File System |
| HGA | High Gain Antenna |
| HTML | HyperText Markup Language |
| IAG | International Association of Geodesy |
| IAU | International Astronomical Union |
| IBM | International Business Machines® |
| ICT | Integer Cosine Transform |
| IDL | Interactive Data Language |
| IEM | Integrated Electronics Module |
| IMP | Imager for Mars Pathfinder |
| ISA | Integrated Support Assembly |
| ISO | International Standards Organization |
| IVP | Image Vector Pointing |
| JGR | Journal of Geophysical Research |
| JPEG | Joint Photographic Experts Group |
| JPL | Jet Propulsion Laboratory |
| LCT | Linear Cosine Transform |
| LGA | Low Gain Antenna |
| LPL | Lunar and Planetary Laboratory |
| LREU | Lander Remote Engineering Unit |
| LST | Local Solar Time |
| Mbytes | Megabytes |
| MESUR | Mars Environmental Survey |
| MET | Meteorology |
| MFEX | Microrover Flight Experiment |
| MFX | Martian Surface Fixed coordinate frame (check) |
| MGA | Medium Gain Antenna |
| MIPL | Multimission Image Processing Laboratory |
| MIPS | Multimission Image Processing Subsystem |
| MIPS | Millions of Instructions Per Second |
| MLL | Mars Local Level coordinate frame (check) |
| MPF | Mars Pathfinder |
| MPFL | Mars Pathfinder Lander |
| MPFR | Mars Pathfinder Rover |
| MSB | Most Significant Bit (or Byte) |
| MSW | Microsoft® Word |
| NAIF | Navigation and Ancillary Information Facility |
| NASA | National Aeronautics and Space Administration |
| NCS | Nutation Control System |
| NIST | National Institute of Standards and Technology |
| NSSDC | National Space Science Data Center |
| OS | Operating System |
| PAM-D | Payload Assist Module-D |
| PC | Personal Computer |
| PDF | Adobe® Portable Document Format |
| PDS | Planetary Data System |
| PDT | Pacific Daylight Time |
| PF | Pathfinder |
| PIO | Public Information Office |
| PROM | Programmable Read Only Memory |
| PRT | Platinum Resistance Thermometer |
| PSDD | Planetary Science Data Dictionary |
| PST | Pacific Standard Time |
| RAD | Rocket Assisted Descent |
| RAM | Random Access Memory |
| RDR | Reduced Data Record |
| RF | Radio Frequency |
| RFS | Radio Frequency Subsystem |
| RICE | A lossless compression algorithm developed by Bob Rice of JPL |
| RPM | Revolutions Per Minute |
| RSI | Research Systems Incorporated® |
| RTI | Real Time Interrupt |
| RVR | Rover |
| SAT | Science Advisory Team |
| SCLK | Spacecraft Clock count |
| SFDU | Standard Formatted Data Unit |
| SIS | Software Interface Specification |
| SOG | Science Operations Group |
| SPICE | Spacecraft Planet Instrument C-matrix Events |
| sps | samples per second |
| SSA | Star Scanner Assembly |
| TBD | To Be Determined |
| TC | thermocouple |
| TCM | Trajectory Correction Maneuver |
| TDS | Telemetry Delivery Subsystem |
| TMU | Telemetry Modulation Unit |
| UAMS | Upper Atmosphere Mass Spectrometer |
| UHF | Ultra High Frequency |
| UOFA | University of Arizona |
| URL | Uniform Resource Locator |
| USGS | United States Geological Survey |
| UTC | Universal Time Coordinated |
| VICAR | Video Image Communication and Retrieval system |
| VL | Viking Lander |
| VME | VersaModule European, a reliable, multiple-processor, bus architecture |
| VMS | Virtual Memory System |
| WWW | World Wide Web |
| XAR | Extended Attribute Record |