| SED | said | 说 |
| SED | Sound Energy Density | 声能密度 |
| SED | Space Engineering Document | 航天工程文献 |
| SED | Shipper's Export Declaration | 出口申报单 |
| SED | Solar Energy Division (American Society of Mechanical Engineers) | 太阳能部门(美国机械工程师协会) |
| SED | Sedom, Israel - Domestic Airfield (airport code) | 以色列塞多姆-国内机场(机场代码) |
| SED | Science, Environment and Development | 科学、环境与发展 |
| SED | School of Environmental Design | 环境设计学院 |
| SED | Small Enterprise Development | 小型企业发展 |
| SED | Shipper's Export Declaration | 出口申报单 |
| SED | Special Engineers Detachment (Manhattan Project) | 特殊工程师支队(曼哈顿项目) |
| SED | Schweizerischer Erdbebendienst (Swiss Seismological Service) | 瑞士地震局 |
| SED | Single Error Detection | 单一错误检测 |
| SED | Strategic Economic Dialogue | 战略经济对话 |
| SED | Statistical Engineering Division | 统计工程处 |
| SED | Socio-Economic Development | 社会经济发展 |
| SED | Science Education Department | 科学教育部 |
| SED | Serious Emotional Disturbance | 严重情绪障碍 |
| SED | Surface-Conduction Electron-Emitter Display | 表面传导电子发射显示器 |
| SED | Strain Energy Density | 应变能密度 |
| SED | Suberythemal Dose | 红斑剂量 |
| SED | Severely Emotionally Disturbed | 严重情绪困扰 |
| SED | Short Edge Distance | 短边距离 |
| SED | Severely Employment Disadvantaged | 严重就业不利 |
| SED | Severe Emotional Disability | 严重情感残疾 |
| SED | Site Equipment Demonstration (exhibition) | 现场设备演示(展览) |
| SED | State Education Department | 州教育部 |
| SED | Smoke-Emitting Diode | 烟雾发射二极管 |
| SED | Special Enforcement Detail | 特殊强制执行详细信息 |
| SED | Sustainable Energy Development | 可持续能源发展 |
| SED | System Evolution Description | 系统演进描述 |
| SED | Self-Encrypting Drive | 自加密驱动器 |
| SED | Strip Endpoint Diffraction | 条带端点衍射 |
| SED | Spacecraft Engineering Department | 航天器工程部 |
| SED | Spanish Education Development | 西班牙教育发展 |
| SED | Skill Enhancement Division | 技能提升部 |
| SED | Sub-Entire Domain | 子整个域 |
| SED | Sales, Engineering and Development | 销售、工程和开发 |
| SED | Special Events Director | 特别活动总监 |
| SED | signals external data (US DoD) | 信号外部数据(美国国防部) |
| SED | Sozialistische Einheitspartei Deutschlands (Socialist Union Party of East Germany) | 东德社会主义联盟党 |
| SED | Standard Error of the Difference (statistics) | 差的标准误差(统计) |
| SED | Sozialistiche Einheitspartei | 第三方社会责任 |
| SED | Special Enforcement Division | 特别执法处 |
| SED | Search Engine Database | 搜索引擎数据库 |
| SED | Svetlana Electronic Devices | Svetlana电子设备 |
| SED | Shipper's Export Document | 托运人的出口文件 |
| SED | The Sozialistischen Einheitspartei Deutschlands | 德意志联邦共和国苏维埃社会主义共和国 |
| SED | Stream Editor Disk | 流编辑器磁盘 |
| SED | Seeing-Eye Dog | 导盲犬 |
| SED | Survey of Earned Doctorates | 博士普查 |
| SED | Standard Erytemdos | 标准Erytemdos |
| SED | Software Engineering Directorate | 软件工程局 |
| SED | Software Engineering Design | 软件工程设计 |
| SED | Satellite Eligibility Determination (site) | 卫星资格确定(现场) |
| SED | Spectral Energy Distribution | 光谱能量分布 |
| SED | Secondary Electron Detector | 二次电子探测器 |
| SED | Survey of English Dialects | 英语方言调查 |
| SED | Sub-clinical Eating Disorder | 亚临床饮食障碍 |
| SED | Systems Engineering Division | 系统工程部 |
| SED | Skin Erythema Dose | 皮肤红斑剂量 |
| SED | Supported Education | 支持的教育 |
| SED | Sedating | 镇静 |
| SED | Stream Editor | 流编辑器 |
| SED | Squared Euclidean Distance | 平方欧几里德距离 |
| SED | Special Electrical Devices | 特殊电气设备 |
| SED | Senior Executive Development | 高级管理人员发展 |
| SED | subendothelial deposits | 内皮下沉积物 |
| SED | staphylococcal enterotoxin d | 葡萄球菌肠毒素d |
| SED | seborrhoic dermatitis | 皮脂分泌性皮炎 |
| SED | Seriously Emotionally Disturbed | 严重情绪困扰 |
| SED | Self Evaluation Document | 自我评估文件 |
| SED | sedes | 轿车 |
| SED | Severe Emotional Disturbance | 严重情绪障碍 |
| SED | sedimentation(rate) | 沉降(速率) |
| SED | stone expelling decoction | 排石汤 |
| SED | Smoke Emitting Diode | 烟雾发射二极管 |
| SED | sediment | 沉淀物 |
| SED | Space Exploration Day | 太空探索日 |
| SED | spondyloepiphyseal dysplasia | 脊椎骨骺发育不良 |
| SED | Small End Diameter | 小端直径 |
| SED | Site Equipment Demonstration | 现场设备演示 |
| SED | spinal cord irradiation equivalent dose | 脊髓辐射当量剂量 |
| SED | Standard Erythema Dose | 标准红斑剂量 |
| SED | Simple Encrypted Data | 简单加密数据 |
| SED | Sedom, Israel | 以色列塞多姆 |
| SED | Secure Encryption Device | 安全加密设备 |