| RAD | research and development | 研究和开发 |
| RAD | Rapid Application Development | 快速应用程序发展法 |
| RAD | Random Access Disc | 随机存取磁盘 |
| RAD | Radiator | 散热器 |
| RAD | Royal Association for Deaf People (UK) | 英国皇家聋人协会 |
| RAD | Radiate/Radiation | 辐射/辐射的影响 |
| RAD | Rapid Application Development (software development) | 快速应用程序开发（软件开发） |
| RAD | Reactive Airway Disease (asthma) | 反应性气道疾病（哮喘） |
| RAD | Requirements Analysis and Design | 需求分析与设计 |
| RAD | Radio | 无线电广播 |
| RAD | Radial (street suffix) | 径向（街道后缀） |
| RAD | Ropeadope (records and radio) | Ropedope（唱片和收音机） |
| RAD | Rapid And Disciplined | 快速且有纪律 |
| RAD | Request for Authority to Develop | 开发授权请求 |
| RAD | Retiree Activity Day | 退休人员活动日 |
| RAD | Radiation Absorbed Dose | 辐射吸收剂量 |
| RAD | Rape Aggression Defense | 强奸攻击防御 |
| RAD | Race Against Drugs | 与毒品赛跑 |
| RAD | Royal Academy of Dance | 皇家舞蹈学院 |
| RAD | Rapid Access Disk | 快速访问磁盘 |
| RAD | Radius | 半径 |
| RAD | Random Access Data | 随机访问数据 |
| RAD | Revised Acronym Dictionary | 修订首字母缩略词词典 |
| RAD | Relative Average Deviation | 相对平均偏差 |
| RAD | Rules for Archival Description (Canadian rules for organisation of archives) | 档案描述规则（加拿大档案组织规则） |
| RAD | Remote Administration Device | 远程管理设备 |
| RAD | Recommendation and Approval Document | 推荐和批准文件 |
| RAD | Return to Active Duty | 返回现役 |
| RAD | Reverse Angle Doctorblade (flexographic printing) | 反向角度刮刀（柔性版印刷） |
| RAD | Respiratory Assist Device (medical) | 呼吸辅助设备（医疗） |
| RAD | Roughneck Airsoft Detachment | Roughneck Airsoft支队 |
| RAD | Read All Day | 全天阅读 |
| RAD | Random Agile Deinterleaver | 随机敏捷解交织器 |
| RAD | Random Access Drive | 随机存取驱动器 |
| RAD | Real-time Active Display | 实时活动显示 |
| RAD | Rijksarchiefdienst | Rijksarchiefdienst公司 |
| RAD | Resource Allocation Display | 资源分配显示 |
| RAD | Right Axis Deviation (electrocardiogram) | 右轴偏移（心电图） |
| RAD | Radical (mathematics) | 字根（数学） |
| RAD | Reprogrammable Application Device | 可重新编程的应用设备 |
| RAD | Reactive Attachment Disorder (sometimes found in abused and/or adopted children) | 无功附件中发现的混乱(有时滥用和/或被收养的孩子) |
| RAD | Rapid Applications Development | 快速应用程序开发 |
| RAD | Robot Assisted Delivery | 机器人辅助分娩 |
| RAD | Rural Agroenterprise Development | 农村农业企业发展 |
| RAD | Reaching Across Differences | 跨越差异 |
| RAD | Revere Against Discrimination | 反歧视牧师 |
| RAD | Ratboy Ardent Devotees | Ratboy热心信徒 |
| RAD | Rebelling Against The Devil | 反抗魔鬼 |
| RAD | Readily Available Deliveries | 随时可用的交付 |
| RAD | Recreation And Discipleship | 娱乐和训练 |
| RAD | Rapid Agony Distributor | Rapid Agony分销商 |
| RAD | Related Arts Day | 相关艺术日 |
| RAD | Radience | Radience（半径） |
| RAD | Resisting Aggression Defensively | 防御性地抵抗攻击 |
| RAD | Recorded Announcement Device | 录制的公告设备 |
| RAD | Roll Attitude Determination | 滚转姿态测定 |
| RAD | Respect All Differences | 尊重所有差异 |
| RAD | Reality AdLib Tracker 2-op FM music file | 现实AdLib跟踪器2 op FM音乐文件 |
| RAD | Radical Awareness Of Discipleship | 激进的门徒意识 |
| RAD | Radically Aware Disciples | 激进的信徒 |
| RAD | Rhythm, Art, snd Drama | 节奏、艺术和戏剧 |
| RAD | Reckless and Deadly (Raven Shield and Battlefield 2 gaming clan) | 鲁莽和致命（乌鸦之盾和战场2游戏部落） |
| RAD | Release/d from Active Duty | 版本/ d从服现役 |
| RAD | Rural Action for Development | 农村发展行动 |
| RAD | Requirements and Architecture Design | 需求和架构设计 |
| RAD | Roentgen Absorbed Dose | 伦琴吸收剂量 |
| RAD | Remote Antenna Driver | 遥控天线驱动器 |
| RAD | Revised Alternative Dataflow (US Navy) | 修订的替代数据流（美国海军） |
| RAD | Realtime Agent Developer (Open Networks Engineering) | 实时代理开发人员（开放网络工程） |
| RAD | Resource Access Decision | 资源访问决策 |
| RAD | Rational Application Developer (IBM) | Rational Application Developer（IBM） |
| RAD | Robot Alchemic Drive (video game) | 机器人Alchemic Drive（视频游戏） |
| RAD | Regional Accountable Depot | 区域责任仓库 |
| RAD | Reconnaissance Automatique de Documents (French: Automatic Document Recognition) | 文件侦察自动化（法语：自动文件识别） |
| RAD | Receive Antenna Diversity | 接收天线分集 |
| RAD | Rainbow Alliance of the Deaf | 彩虹聋人联盟 |
| RAD | Rite Aide Corporation (stock symbol) | Rite Aide公司（股票符号） |
| RAD | Required Availability Date | 要求的可用日期 |
| RAD | Resource Availability Determination | 资源可用性确定 |
| RAD | Requirements Allocation Document | 需求分配文件 |
| RAD | Radians (measure of angle) | 弧度（角度测量） |
| RAD | Reichsarbeitsdienst (Labor Service of the German Third Reich) | 德意志第三帝国劳工部 |
| RAD | Recorded Announcement Device (telecommunications) | 录音广播设备（电信） |
| RAD | Reactive Airway Disease | 反应性气道疾病 |
| RAD | radical | 根本的 |
| RAD | right axis deviation | 右轴偏差 |
| RAD | right atrial diameter | 右心房直径 |
| RAD | radiation dose unit | 辐射剂量单位 |
| RAD | Recreation Academic Development | 娱乐学术发展 |
| RAD | radium D | 镭D |
| RAD | radioactive detector | 放射性探测器 |
| RAD | Remote Access Device | 远程访问设备 |
| RAD | roentgen administered dose | 伦琴剂量 |
| RAD | ReichsArbeitsDienst (State Labor Service) | ReichsArbeitsDienst（国家劳工局） |
| RAD | radiotherapist | 放射治疗师 |
| RAD | right atrial dimension | 右心房尺寸 |
| RAD | Radian | 弧度 |
| RAD | Rapid Application Design | 快速应用程序设计 |
| RAD | Reactive Attachment Disorder | 反应性依恋障碍 |
| RAD | Radiate | 辐射 |