| S | signed | 已签字 |
| S | shilling | 先令 |
| S | South | 南方 |
| S | second | 秒;第二 |
| S | Sulphur | 硫 |
| S | sucre | 苏克雷 |
| S | sol | 索尔 |
| S | si | 死机 |
| S | shipper | 发货人 |
| S | Sparkasse (German: public savings bank) | Sparkasse(德语:公共储蓄银行) |
| S | Sickness (on overtime forms) | 疾病(以加班形式) |
| S | US DoT tire speed rating (112 mph) | 美国DoT轮胎额定速度(112英里\/小时) |
| S | Area of a geometric figure (mathematics) | 几何图形的面积(数学) |
| S | Franchise Stamp (Scott Catalogue prefix; philately) | 特许经营邮票(斯科特目录前缀;集邮) |
| S | Sacrifice (baseball) | 牺牲(棒球) |
| S | schwabach's test | 施瓦巴赫(氏)试验:受检耳与正常耳骨导对比试验 |
| S | S Sub-Shell (innermost electron subshell) | S子壳(最内层电子子壳) |
| S | Seminar | 研讨课 |
| S | Antisubmarine (US military aircraft designation; as in S-2 Tracker) | 反潜(美国军用飞机名称;如S-2跟踪器) |
| S | Superb | 棒 极 了 |
| S | Save (baseball) | 保存(棒球) |
| S | Starboard Truss Segment (ISS) | 右特拉斯段(ISS) |
| S | Sweden (ISO Country Identifier) | 瑞典(ISO国家标识符) |
| S | Starboard (nautical) | 右舷(航海) |
| S | Shilling (British currency) | 先令(英国货币) |
| S | Sears (stock symbol) | 西尔斯(股票符号) |
| S | Entropy (thermodynamics) | 熵(热力学) |
| S | San Francisco, CA (mint mark) | 加利福尼亚州旧金山(造币厂标记) |
| S | Subsidiary (IRB) | 子公司(IRB) |
| S | Search (Stores 100 code) | 搜索(商店100代码) |
| S | stimulus | 刺激 |
| S | surgical | 外科的 |
| S | Sheffield (postcode, United Kingdom) | 谢菲尔德(邮政编码,英国) |
| S | sensation | 感觉 |
| S | Sign | 签名 |
| S | Secret | 秘密 |
| S | schizophrenia | SChiZophrenia公司 |
| S | salmonella(genus) | 沙门氏菌属 |
| S | surface | 表面 |
| S | sympathetic | 同情的 |
| S | Short | 短的 |
| S | staphylococcus | 葡萄球菌 |
| S | Sick | 生病的 |
| S | Sulfur | 硫黄 |
| S | Storage | 存储 |
| S | Servicing | 服务 |
| S | Soldering | 焊接 |
| S | Scout | 童子军 |
| S | Scrap | 碎片 |
| S | Displacement | 取代 |
| S | Semi-Annual | 半年度 |
| S | Track spacing | 轨道间距 |
| S | As | 像 |
| S | Spectacles | 眼镜 |
| S | Supervisory Function Bit | 监控功能位 |
| S | Seaman | 水手 |
| S | Senate | 参议院 |
| S | Sex | 性别 |
| S | Smile | 微笑 |
| S | skeletal | 骨骼的 |
| S | surgery | 外科手术 |
| S | Streptococcus | 链球菌 |
| S | Skype (voice-over-Internet service) | Skype(互联网语音服务) |
| S | Snow (weather reports) | 雪(天气报告) |
| S | Sealed (CD condition) | 密封(CD条件) |
| S | saline | 生理盐水 |
| S | soluble | 可溶的 |
| S | Seite | 赛蒂 |
| S | spleen | 脾脏 |
| S | suture | 缝合 |
| S | synchroscope | 同步示波器 |
| S | spasm | 痉挛 |
| S | suction | 抽吸 |
| S | spirillum | 螺旋菌属 |
| S | Siemens | 西门子 |
| S | solubility | 溶解度 |
| S | soft | 软的 |
| S | sinus | 窦 |
| S | serum | 血清 |
| S | solute | 溶质 |
| S | signetur | 签字人 |
| S | sacrum | 骶骨 |
| S | supramammillary nucleus | 乳头上核 |
| S | spherical | 球形的 |