| A/I | Action Item | |
| A/L | ｴｱﾛｯｸ | Airlock |
| AAA | ｱﾋﾞｵﾆｸｽｴｱｱｾﾝﾌﾞﾘ(PM) | Avionics Air Assembly |
| ACV | 空気逆止弁 | Air Check Valve |
| ADEOS | 地球プラットフォーム技術衛星 | Advanced Earth Observation Satellite |
| AFT | 後方 | After |
| ALFLEX | 小型自動着陸実験 | Automatic Landing Flight Experiment |
| APCU | ｱｾﾝﾌﾞﾘﾊﾟﾜｰｺﾝﾊﾞｰﾀﾕﾆｯﾄ (ｼｬﾄﾙ) | Assembly Power Converter Unit |
| APS | Automated Payload Switch (US) | |
| ASCII | American Standard Code for Information Interchange | |
| ATCS | 能動型熱制御システム | Active Thermal Control System |
| ATU | 音声端末装置 | Audio Terminal Unit |
| C&DH | Command & Data Handling | |
| C&T | 通信及び追跡 | Communications and Tracking |
| C&W | 警告･警報 | Caution & Warning |
| CBM | 共通結合機構 | Common Berthing Mechanism |
| CDDT | Common Display Development Team | |
| CDR | 詳細設計審査 | Critical Design Review |
| CHX | キャビン熱交換器 | Cabin Heat Exchanger (JEM) |
| CHX LS | 熱交換器水分センサ | Cabin Heat Exchanger Liquid Sensor |
| CMD | ｺﾏﾝﾄﾞ | Command |
| DIU | ﾃﾞｰﾀｲﾝﾀｰﾌｪｰｽﾕﾆｯﾄ(JEM) | Data Interface Unit |
| DMS | ﾃﾞｰﾀ管理ｼｽﾃﾑ (JEM) | Data Management System |
| DRTS | ﾃﾞｰﾀ中継衛星 (NASDA) | Data Relay & Tracking Satellite |
| ECLS | Environmental Control and Life Support | |
| ECLSS | 環境制御生命維持ｼｽﾃﾑ | Environmental Control and Life Support System |
| ECU | JLE制御電子装置 (JLE) | Electronic Control Unit |
| EDU | EFU ﾄﾞﾗｲﾊﾞｰﾕﾆｯﾄ (JEF) | EFU Driver Unit |
| EE | ｴﾝﾄﾞｴﾌｪｸﾀ(JEMRMS) | End Effector |
| EF | 曝露部 (JEM) | Exposed Facility |
| EFHX | 曝露部熱交換機 | Exposed Facility Heat Exchanger |
| EFU | 曝露部側装置交換機構 (JEF) | Exposed Facility Unit |
| ELM | 実験用補給部 (JEM) | Experiment Logistics Module |
| ELM-ES | 補給部曝露区(JEM) | Experiment Logistics Module Exposed Section |
| ELM-PS | 補給部与圧区 (JEM) | Experiment Logistics Module Pressurized Section |
| EPS | 電力系 | Electrical Power System |
| ESA | 欧州宇宙機関 | European Space Agency |
| ESS | 実験支援系 (JEM) | Experiment Support Subsystem |
| ESS (1) | 実験支援系(JEM) | Experiment Support Subsystem |
| ESS (2) | 拡張支援ｿﾌﾄｳｴｱ(JCP) | Extended Support Software |
| EVA | 船外活動 | Extra Vehicular Activity |
| FAS | ﾌﾗｲﾄｱﾌﾟﾘｹｰｼｮﾝｿﾌﾄｳｴｱ | Flight Application Software |
| FC | ﾌﾗｲﾄｺﾝﾄﾛｰﾗ(MCC) | Flight Controller |
| FCD | 機能管理文書 | Function Control Document |
| FCT | Flight Control Team | |
| FD (1) | ﾌﾗｲﾄﾃﾞｨﾚｸﾀ (MCC) | Flight Director |
| FD (2) | 飛行日 | Flight Day |
| FDIR | 故障検出、分離及び処置 | Failure, Detection, Isolation, and Recovery |
| FDS | 火災検知及び消火 | Fire Detection and Suppression |
| FPP (1) | ﾌﾚｵﾝﾎﾟﾝﾌﾟﾊﾟｯｹｼﾞ | Freon Pump Package |
| FPP (2) | ﾎﾟﾝﾌﾟﾊﾟｯｹｰｼﾞ (JEF) | Fluid Pump Package |
| FSS | ﾌﾗｲﾄｼｽﾃﾑｿﾌﾄｳｴｱ | Flight System Software |
| FWD | 前方 | Forward |
| FY | 会計年度 | Fiscal Year |
| Financial Year | ||
| FYI | For your Information | |
| GF | ｸﾞﾗﾌﾟﾙﾌｨｸｽﾁｬ | Grapple Fixture |
| H&S | ﾍﾙｽ&ｽﾃｰﾀｽ | Health and Status |
| H/W | ﾊｰﾄﾞｳｪｱ | Hardware |
| HCE | ﾋｰﾀ制御装置 (JEF) | Heater Control Equipment |
| HCTL | ﾋｰﾀ制御装置(PM) | Heater Controller |
| HRM | 保持開放機構(JEMRMS) | Hold/Release Mechanism |
| HTR | ﾋｰﾀ | Heater |
| HTV | H-Ⅱ 補給機 | H-2 Transfer Vehicle (NASDA) |
| HX | 熱交換機 | Heat Exchanger |
| I/F | ｲﾝﾀﾌｪ-ｽ | Interface |
| I/O | 入出力 | Input/Output |
| ICD | ｲﾝﾀﾌｪｰｽ管理文書 | Interface Control Document |
| ICS | 衛星間通信装置(JEM) | Inter-Orbit Communication System |
| IMV | ﾓｼﾞｭ-ﾙ間通風換気 | Inter-Module Ventilation |
| IP&CL | Instrumentation Program & Command List | |
| ISPR | 国際標準ﾍﾟｲﾛｰﾄﾞﾗｯｸ | International Standard Payload Rack |
| ISS | 国際宇宙ｽﾃｰｼｮﾝ | International Space Station |
| IVA | 船内活動 | Intravehicular Activity |
| JCP | JEM管制制御装置(PM) | JEM Control Processor |
| JEF | 曝露部 (JEM) | JEM Exposed Facility |
| JEM | 宇宙ｽﾃｰｼｮﾝ取付型日本実験ﾓｼﾞｭｰﾙ | Japanese Experiment Module |
| JEMRMS | JEM遠隔ﾏﾆﾋﾟｭﾚｰﾀ･ｼｽﾃﾑ | JEM Remote Manipulator System |
| JLE | 補給部曝露区 | JEM Logistics Module Exposed Section |
| JLP | 補給部与圧区 (JEM) | JEM Logistics Module Exposed Section |
| JOP | Joint Operations Panel | |
| JPM | 与圧部 (JEM) | JEM Pressurized Module |
| JSC | ｼﾞｮﾝｿﾝ宇宙ｾﾝﾀｰ (ﾃｷｻｽ州) | Johnson Space Center |
| KSC | ｹﾈﾃﾞｨ宇宙ｾﾝﾀｰ (ﾌﾛﾘﾀﾞ州) | Kennedy Space Center |
| LTL | 低温ﾙｰﾌﾟ(JEM) | Low Temperature Loop |
| MA | 親ｱ-ﾑ(JEMRMS) | Main Arm |
| MCC | ﾐｯｼｮﾝｺﾝﾄﾛｰﾙｾﾝﾀｰ (JSC) | Mission Control Center |
| MCC-H | ﾐｯｼｮﾝｺﾝﾄﾛｰﾙｾﾝﾀｰ (JSC) | Mission Control Center - Houston |
| MCC-M | ﾐｯｼｮﾝｺﾝﾄﾛｰﾙｾﾝﾀｰ (ﾛｼｱ) | Mission Control Center - Moscow |
| MLI | 多層断熱材 | Multi-Layer Insulation |
| MPEV | Manual Pressure Relief Valve | |
| MS | ﾐｯｼｮﾝ ｽﾍﾟｼｬﾘｽﾄ | Mission Specialist |
| MTL | 中温熱ﾙｰﾌﾟ(JEM) | Moderate Temperature Loop |
| N/A | 不適用 | Not Applicable |
| Not Available | ||
| NASA | 米国航空宇宙局 | National Aeronautics and Space Administration |
| NASDA | 宇宙開発事業団 | National Space Development Agency of Japan |
| NPRV | Negative Pressure Relief Valve | |
| NSTS | 米国宇宙輸送ｼｽﾃﾑ(ｽﾍﾟｰｽｼｬﾄﾙ) | National Space Transportation System |
| OCS | 運用管制システム | Operations Control System |
| ODF | 軌道上運用ﾌｧｲﾙ 運用ﾃﾞｰﾀﾌｧｲﾙ(手順書ﾌｧｲﾙ) | Operations Data File |
| ORU | 軌道上交換ﾕﾆｯﾄ | Orbital Replacement Unit |
| OpNom | 運用命名規則 | Operations Nomenclature |
| Ops | 運用 | Operations |
| Ops. | 運用 | Operations |
| P/L | 搭載実験装置 ﾍﾟｲﾛｰﾄﾞ | Payload |
| PAM | ﾍﾟｲﾛ-ﾄﾞ取付機構 | Payload Attachment Mechanism |
| PAO | 広報担当 (MCC) | Public Affair Officer |
| PBA | 可搬式呼吸器 | Portable Breathing Apparatus |
| PCA | Pressure Control Assembly (US) | |
| PCS | Portable Computer System | |
| PCU | 電力分配制御装置 (JLE) | Power Control Unit |
| PDB | 配電箱 | Power Distribution Box |
| PDGF | 電力・通信付ｸﾞﾗﾌﾟﾙﾌｨｸｽﾁｬ | Power & Data Grapple Fixture |
| PDH | 実験ﾃﾞｰﾀ処理装置 (PM) | Payload Data Handling Unit |
| PDR | 基本設計審査 | Preliminary Design Review |
| PDU | 分電盤 | Power Distribution Unit |
| PEHG | Payload Ethernet Hub Gateway | |
| PFE | 可搬式消火器 | Portable Fire Extinguisher |
| PHALCON | Power, Heating, Articulation, and Lighting Control Officer (SSCC) | |
| PIB | ﾊﾟﾜｰｲﾝﾀｰﾌｪｲｽﾎﾞｯｸｽ | Power Interface Box |
| PIU | ﾍﾟｲﾛｰﾄﾞ側装置交換機構 | Payload Interface Unit |
| PL | ﾍﾟｲﾛｰﾄﾞ 搭載実験装置 | Payload |
| PM | 与圧部 (JEM) | Pressurized Module |
| PORT | 左舷 | |
| PPRV | Positive Pressure Relief Valve | |
| PTCS | 受動的熱制御系 | Passive Thermal Control System |
| PUI | Program Unique Identifier | |
| PVPP | Payload Verification Program Policy | |
| QD | 急速着脱継手 | Quick Disconnecter |
| RHX | 再生熱交換器(JPM) | Regenerative Heat Exchanger |
| RMS | 遠隔ﾏﾆﾋﾟｭﾚ-ﾀｼｽﾃﾑ (JEM) | Remote Manipulator System |
| RPC | 電力遮断器 遠隔電力制御装置 | Remote Power Controller |
| RPCM | Remote Power Control Mechanism | |
| Remote Power Controller Module | ||
| RSA | ﾛｼｱ宇宙省 | Russian Space Agency |
| S&PA | 安全開発保証 | Safety and Product Assurance |
| S/W | ｿﾌﾄｳｪｱ | Software |
| SD | 煙ｾﾝｻ | Smoke Detector |
| SFA | 子アーム（JEMRMS） | Small Fine Arm |
| SLT | 可搬式管制端末 | System Laptop |
| SOV | 遮断弁 | Shutoff Valve |
| SPB | ｻﾊﾞｲﾊﾞﾙ電力分電盤 | Survival Power Distribution Box |
| SRMS | ｼｬﾄﾙRMS | Shuttle RMS |
| SRR | ｼｽﾃﾑ要求審査 | System Requirements Review |
| SSCC | 宇宙ｽﾃｰｼｮﾝ管制ｾﾝﾀｰ (JSC) | Space Station Control Center |
| SSE | SFA保管装置（JEMRMS) | SFA Storage Equipment |
| SSIPC | 宇宙ｽﾃｰｼｮﾝ総合ｾﾝﾀｰ | Space Station Integration and Promotion Center |
| SSMB | 宇宙ｽﾃｰｼｮﾝ本体 | Space Station Manned Base |
| SSRMS | 宇宙ｽﾃｰｼｮﾝRMS | Space Station RMS |
| STBD | 右舷 | StarBoard |
| STS | 宇宙輸送システム | Space Transportation system |
| TAC | 熱制御系装置制御装置 (JEM) | TCS Assembly Controller |
| TBD | 未定 | To Be Determined |
| TBR | 未決定 | To Be Resolved |
| TBS | To Be Supplied | |
| To Be Specified | ||
| TCA | 熱制御系装置(JEM) | TCS Assembly |
| TCS | 熱制御ｼｽﾃﾑ | Thermal Control System |
| TCV | 風量調整弁 (JEM) | Temperature Control Valve |
| TEA | ﾄﾙｸ平衡姿勢（ISS) | Torque Equilibrium Attitude |
| THC (1) | 空気調和装置 | Temperature and Humidity Control Assembly |
| THC (2) | 並進用ﾊﾝﾄﾞｺﾝﾄﾛ-ﾗ (JEMRMS) | Translational Hand Controller |
| THCU | 制御装置 | Temperature Humidity Control Unit |
| THOR | Thermal Operations and Resource Officer (SSCC) | |
| TIU | TCS ｲﾝﾀｰﾌｪｰｽﾕﾆｯﾄ (JEF) | TCS Interface Unit |
| TKSC | 筑波宇宙ｾﾝﾀｰ | Tsukuba Space Center |
| TLM | ﾃﾚﾒﾄﾘ | Telemetry |
| TMIS | 技術及び管理情報ｼｽﾃﾑ | Technical and Management Information System |
| TNSC | 種子島宇宙ｾﾝﾀｰ | Tanegashima Space Center |
| TRASYS | Thermal Radiation Analysis/Analyzer System | |
| TVC | TVｶﾒﾗ | TV Camera |
| TVM | TVﾓﾆﾀ | TV Monitor |
| U.S. | ｱﾒﾘｶ合衆国 | United States |
| U.S. LAB | 米国実験ﾓｼﾞｭｰﾙ | United States Laboratory Module |
| US | ｱﾒﾘｶ合衆国 | United States |
| USOS | 米国の軌道上部分 | United States on-Orbital Segment |
| VAJ | ﾊﾞｷｭｰﾑｱｸｾｽｼﾞｬﾝﾊﾟ | Vacuum Access Jumper |
| VCU | ﾋﾞﾃﾞｵ制御装置 | Video Control Unit |
| VRA | ﾘﾘｰﾌ/ﾍﾞﾝﾄ弁ﾕﾆｯﾄ | Vent & Relief Assembly |
| W/S | ﾜｰｸｽﾃｰｼｮﾝ | Work Station |
| WS (2) | 除湿用水分離器 | Water Separater |
| WS LS | 除湿用水分離機水分センサ | Water Separeter Liquid Sensor |
| WTVC | 手首部TVｶﾒﾗ(JEMRMS) | Wrist TV Camera |
| eclipse | 日陰 | |
| insolation | 日照 | |
| ops | 運用 | Operations |