Below are abbreviations commonly used in conjunction with the Cassini-Huygens mission to Saturn and Titan.

• AACS: Attitude and Articulation Control Subsystem
• ACP: Aerosol Collector and Pyrolyzer (Huygens instrument)
• ACS: Attitude Control Subsystem
• AFC: AACS Flight Computer
• ARWM: Articulated Reaction Wheel Mechanism
• ASI: Agenzia Spaziale Italiana, the Italian space agency
• BIU: bus interface unit
• CAM: Command Approval Meeting
• CAPS: Cassini Plasma Spectrometer (Cassini instrument)
• CDA: Cosmic Dust Analyzer (Cassini instrument)
• CDS: Command and Data Subsystem - Cassini computer that commands and collects data from the instruments
• CICLOPS: Cassini Imaging Central Laboratory for Operations
• CIMS: Cassini Information Management System
• CIRS: Composite InfraRed Spectrometer (Cassini instrument)
• DCSS: Descent Control Subsystem
• DISR: Descent Imager and Spectral Radiometer (Huygens instrument)
• DSCC: Deep Space Communications Center
• DSN: Deep Space Network (large antennas around the earth)
• DTSTART: Dead Time Start
• DWE: Doppler Wind Experiment (Huygens instrument)
• ELS: Electron Spectrometer (part of CAPS instrument)
• ERT: Earth-received time, UTC of an event
• ESA: European Space Agency
• ESOC: European Space Operations Centre
• FSW: flight software
• GCMS: Gas Chromatograph & Mass Spectrometer (Huygens instrument)
• HASI: Huygens Atmosphere Structure Instrument (Huygens instrument)
• HGA: High Gain Antenna
• HMCS: Huygens Monitoring and Control System
• HPOC: Huygens Probe Operations Center
• IBS: Ion Beam Spectrometer (part of CAPS instrument)
• IEB: Instrument Expanded Blocks (instrument command sequences)
• IMS: Ion Mass Spectrometer (part of CAPS instrument)
• INMS: Ion and Neutral Mass Spectrometer (Cassini instrument)
• ISS: Imaging Science Subsystem (Cassini instrument)
• IVP: Inertial Vector Propagator
• JPL: Jet Propulsion Laboratory
• LGA: Low Gain Antenna
• MAG: Dual Technique Magnetometer (Cassini instrument)
• MIMI: Magnetospheric Imaging Instrument (Cassini instrument)
• NAC: Narrow Angle Camera
• NASA: National Aeronautics and Space Administration (U.S.)
• OTM: Orbit Trim Maneuver
• PDRS: Probe Data Relay Subsystem
• PHSS: Probe Harness SubSystem
• POSW: Probe On-Board Software
• PPS: Power and Pyrotechnic Subsystem
• PRA: Probe Relay Antenna
• PSA: Probe Support Avionics
• PSIV: Preliminary Sequence Integration and Validation
• PSE: probe support equipment
• RADAR: Radio Detection and Ranging Instrument (Cassini instrument)
• RCS: Reaction Control System
• RFS: Radio Frequency Subsystem
• RPWS: Radio and Plasma Wave Science (Cassini instrument)
• RPX: ring plane crossing
• RSS: Radio Science Subsystem (Cassini instrument)
• RTG: radioisotope thermoelectric generator
• RWA: Reaction Wheel Assembly
• SCET: Spacecraft Event Time
• SCR: sequence change requests
• SKR: Saturn Kilometric Radiation
• SOI: Saturn Orbit Insertion (1 July 2004)
• SOP: Science Operations Plan
• SSP: Surface Science Package (Huygens instrument)
• SSR: Solid State Recorder
• SSUP: Science and Sequence Update Process
• TLA: Thermal Louver Assemblies
• USO: UltraStable Oscillator
• UTC: Coordinated Universal Time (essentially GMT)
• UVIS: Ultraviolet Imaging Spectrometer (Cassini instrument)
• VIMS: Visible and Infrared Mapping Spectrometer (Cassini instrument)
• VRHU: Variable Radioisotope Heater Units
• WAC: Wide Angle Camera