| Subject | English | Japanese |
| tech. | air conditioning system of floor units and ducts | 各階調和器方式 (かくかいちょうわきダクトほうしき) |
| gen. | n airborne warning and control system | ＡＷＡＣＳ |
| gen. | n Automated Data Editing and Switching System | ＡＤＥＳＳ |
| IMF. | Automated System for Customs Data Acquisition, Control and Management | 税関データ管理自動システム |
| IMF. | Automated System for Customs Data and Management | 税関データ管理自動システム |
| IMF. | Basel Committee on Payment and Settlement System | バーゼル支払い・決済システム委員会 |
| el.gen. | bin-and-feeder system boiler | ビンおよびフィーダ式の系統ボイラ |
| gen. | n Character and Pattern Telephone Access Information System | キャプテン・システム |
| gen. | n Character and Pattern Telephone Access Information System | キャプテンシステム |
| gen. | n Comintern policy documents urging overthrow of Japan's imperial and metayage systems | ３２年テーゼ |
| gen. | n Comintern policy documents urging overthrow of Japan's imperial and metayage systems | 三二年テーゼ |
| gen. | n county and prefecture system | 郡県制度 |
| gen. | n cycle and ride system | サイクルアンドライド方式 |
| comp. | n data acquisition and control system | データ収集管理システム |
| abbr. | n division of the daijokan under the ritsuryo system responsible for controlling central and provincial governmental offices | 辨 oK |
| abbr. | n division of the daijokan under the ritsuryo system responsible for controlling central and provincial governmental offices | 瓣 oK |
| abbr. | n division of the daijokan under the ritsuryo system responsible for controlling central and provincial governmental offices | 辯 oK |
| abbr. | n division of the daijokan under the ritsuryo system responsible for controlling central and provincial governmental offices | 弁 news1 nf10 (ben) |
| gen. | n electoral system comprised of single-seat constituencies and proportionally represented multiple-seat constituencies | 小選挙区比例代表並立制 |
| gen. | environmental control and life support system | 環境制御生命維持システム |
| telegr. | error detecting and feedback system | 誤り検出及びフィードバックシステム |
| reliabil. | failure reporting, analysis and corrective action system | 故障記録修復活動システム |
| comp., MS | Finance and Accounting System Implementation | 財務会計システムの実装 (A template that outlines the steps needed to implement a finance and accounting system. It assumes an existing system or process is in place and a new system will be replacing it. It also assumes that the new application software system has already been chosen) |
| construct. | gas leakage detection and alarm system | ガス漏れ感知・警報システム (がす・もれ・かんち・けいほう・しすてむ) |
| tech. | grid and diagonal pattern street system | 斜線型街路網 (しゃせんがたがいろもう) |
| tech. | gridiron and diagonal road system | 格子斜線形道路網 (こうししゃせんがたどうろもう) |
| gen. | horseback transportation and communication relay system used in ancient Japan | 伝 (つたわり) |
| construct. | integrated lighting and air conditioning system | 照明空調組み合わせ方式 (しょうめい・くうちょう・くみあわせ・ほうしき) |
| IMF. | Investment Control and Valuation System | 投資コントロール・評価システム |
| gen. | irrigation and drainage system | 用排水組織 |
| org.name. | Japan Society for Educational System and Organization | 日本教育制度学会 |
| obs. | n yoji land-tax system during the Edo period under which the government took half of the year's crop and the farmers kept the other half | 五公五民 |
| obs. | n yoji land-tax system during the Edo period under which the government took 40% of the year's crop and the farmers kept 60% | 四公六民 |
| slang | n low-riding vehicle usually containing a powerful speaker system and owned by a juvenile delinquent | ヤン車 |
| tech. | management information and control system | エム•アイ•シー•エス |
| tech. | master and secondary clock system | 親子式電気時計 (おゃこしきでんきとけい) |
| gen. | n Numerical Analysis and Prediction System | ＮＡＰＳ |
| gen. | n old Japanese system of weights and measures | 尺貫法 (しゃっかん・ほう) |
| comp. | n online pattern analysis and recognition system | オンラインパターン解析認識システム |
| gen. | n proportional representation system in which both party and individual votes are cast, seats are distributed amongst parties by proportion of vote obtained, and candidates are elected in descending order of number of votes obtained | 非拘束名簿式比例代表制 |
| gen. | n Qing-dynasty system assigning equal numbers of Manchurians and Han Chinese to central government agencies | 満漢偶数官制 |
| tech. | radial and checker board street system | 放射縦横形街路 (ほうしゃじゅうおうがたがいろ) |
| tech. | radial and ring road system | 放射環状型道路網 (ほうしゃかんじょうがたとうろもう) |
| gen. | n rating system based on dan and kyuu used in Judo, Shogi, etc. | 段級位制 |
| gen. | n rating system based on dan and kyuu used in Judo, Shogi, etc. | 段級制 |
| tech. | ride and ride system | ライド•アンド•ライド•システム |
| gen. | rise and fall system | 昇降式 |
| therm.energ. | roof lifting and swinging system | 炉蓋昇降旋回システム |
| gen. | n sea and air system | シーアンドエア方式 |
| comp., MS | self-monitoring analysis and reporting technology system | Self-Monitoring Analysis and Reporting Technology システム (A system by which technology is used to monitor and predict device performance and reliability. A SMART system employs various diagnostic tests to detect problems with devices, with the object of increasing productivity and protecting data) |
| railw., sec.sys. | signalman's control and display system | 運行制御表示装置 |
| gen. | n system of clans and hereditary titles | 氏姓制度 (of the Yamato court) |
| comp. | n system test and evaluation plan | 試験計画書 |
| comp. | n system test and evaluation plan | システム試験評価計画 |
| gen. | n system that allows for the construction of highways and buildings in the same space | 立体道路制度 |
| gen. | n tax-exempt savings system which includes stocks and cash | マル財 |
| gen. | n yoji the system in government offices and business corporations in which draft proposals are prepared by someone in charge of the matter and circulated for collective deliberation and final approval by particular designated officials or executives | 稟議制度 |
| abbr. | traditional Chinese spelling system in which two characters are used: the first one for the onset, the second one for rhyme and tone | 反 ichi1 news1 nf15 (そり) |
| gen. | n traditional Chinese spelling system in which two characters are used: the first one for the onset, the second one for rhyme and tone | 反切 |
| radio | tree and branch system | 分枝形分配方式 |
| gen. | various craftsmen and artisans under the ritsuryo system | 品部 |
| comp. | n Vehicle Information and Communication Systems | 道路交通情報通信システム |
| gen. | warning and evacuation system | 警報避難システム |