| CA | Corrective Action | 纠正措施 |
| CA | Civil Aviation | 民航 |
| CA | Cleaning Agent | 清洗剂，澄清剂 |
| CA | Competitive Advantage | 竞争优势 |
| CA | Canada | 加拿大 |
| CA | California | 加利福尼亚 |
| CA | Certification Authority | 认证机关 |
| CA | China Aviation Oil Holding Company | 中国航空油料集团公司 |
| CA | Central Airways | 中央航空公司 |
| CA | Competent Authority | 主管当局 |
| CA | Air China International Corp | 中国国际航空公司 |
| CA | calcium | 钙 |
| CA | cancer | 癌 |
| CA | catecholamine | 儿茶酚胺 |
| CA | Control Account | 控制帐目 |
| CA | Cellulose acetate | 醋酸纤维塑料 |
| CA | Call Agent | 通話管理器 |
| CA | Container Application | 容器应用程序 |
| CA | Capability of accuracy | 制程准確度 |
| CA | Call Accounting | 电话自动计费系统 |
| CA | Commonwealth Act | 联邦法案 |
| CA | Capital Airlines | 首都航空公司[美] |
| CA | Cell Allocation | 小区分配 |
| CA | Carbonic Anhydrase | 碳酸酐酶 |
| CA | Carrier Amplifier | 载波放大器 |
| CA | Channel Adapter | 通道转接器 |
| CA | Chemical Abstracts | 《化学文摘》[美] |
| CA | chlormadinone acetate | 乙酸氯地孕酮 |
| CA | Compressed Air | 压缩空气 |
| CA | Computer Access | 计算机存取 |
| CA | Charging Analysis | 计费分析 |
| CA | Collision Avoidance | 碰撞防止 |
| CA | Communication Automation | 通信自动化 |
| CA | Congestion Avoidance | 拥塞防止 |
| CA | Conditional Access | 条件接收 |
| CA | Central America | 中美洲(在墨西哥与南美洲之间) |
| CA | Cash Advance | 现金垫款 |
| CA | Citric Acid | 柠檬酸 |
| CA | Collective Agreement | 工会代表工人与资方代表达成的协议 |
| CA | Cardiac Arrest | 心搏[动]停止 |
| CA | Computer Animation | 计算机直观显示 |
| CA | Chronological Age | 实足年龄(用途测定智商的数据), 实龄 |
| CA | CyanoAcrylate | 氰基丙烯酸盐粘合剂 |
| CA | Civil Affairs | 民政事务 |
| CA | Chromatic Aberration | 色差, 像差 |
| CA | Civil Administration | 民政 |
| CA | Computer Algebra | 计算机代数学 |
| CA | Computer Application (school course) | 计算机应用(学习课程) |
| CA | Contrast Agent | 造影剂, 对比剂 |
| CA | Critical Assembly | 临界装置 |
| CA | Computer-Aided | 计算机辅助 |
| CA | Current Awareness | 最近资料通告 |
| CA | Cable Assembly | 电缆[钢索]组件 |
| CA | Combustion Air | 助燃空气 |
| CA | Common Applications | 通用应用软件 |
| CA | Combat Arms | 有战斗任务的兵种 |
| CA | Commercial Accounts | 商业往来帐户，厂商价款 |
| CA | Cone Angle | 锥角 |
| CA | Crank Angle (Mechanical Engineering) | 曲柄角(机械工程) |
| CA | Cost Account | 成本帐户 |
| CA | Carrier Aircraft | 舰载[运载]飞机, 母机,运输机 |
| CA | Chiropractic Assistant | 脊椎指压治疗法 |
| CA | Contract Authority | 订约授权 |
| CA | Configuration Audit | 配置审查 |
| CA | Charge Amplifier | 电荷放大器 |
| CA | Counter Air | (进攻性或防御性)防空作战,夺取和保持空中优势 |
| CA | Controller of Accounts | 会计主任， 会计检查官， 审计官 |
| CA | Corrosion Allowance | 腐蚀余度 |
| CA | Court of Appeal | 地区法院 |
| CA | Cryptanalysis | 密码分析学，密码翻译法 |
| CA | Cellular Automata | 细胞自动控制（机） |
| CA | Celiac Artery | 腹腔动脉 |
| CA | cable | 电缆 |
| CA | Catamarca (Argentina province, airline code) | 卡塔马卡（阿根廷省，航空公司代码） |
| CA | Cyberangels (International online help association) | 赛博天使（国际在线帮助协会） |
| CA | Clinical Assistant | 临床助理 |
| CA | Chief Advisor | 首席顾问 |
| CA | Construction Authorization | 建筑工程授权 |
| CA | Conjunction Analysis (satellite operations) | 连接分析（卫星操作） |
| CA | Contingency Abort | 应急中止 |
| CA | Carlisle (postcode, United Kingdom) | 卡莱尔（邮政编码，英国） |
| CA | Chemical Alarm | 化学警报 |
| CA | Collison Avoiding | 科里森回避 |
| CA | Chromatic Aberration (lens error) | 色差（透镜误差） |
| CA | Contamination Avoidance | 预防沾染 |
| CA | Contract Administrator | 合同行政官 |
| CA | Competent Authority (EU Medical Devices Directive) | 主管当局（欧盟医疗器械指令） |
| CA | Conflict Alert (Air Traffic Control) | 冲突警报（空中交通管制） |
| CA | Compulsory Acquisition | 强制收购 |
| CA | Coverage Analyzer | 覆盖率分析器 |
| CA | Bromobenzyl Cyanide (tear gas, riot control agent) | 溴苯甲腈（催泪瓦斯、防暴剂） |
| CA | Compact Assignment | 契约分配 |
| CA | Contract Authorization | 合同授权书 |
| CA | Consumer Action | 消费者行动 |
| CA | Conference Agenda | 会议议程 |
| CA | Computer Associates International Inc. | Computer Associates International Inc.公司。 |
| CA | Circa | Circa公司 |
| CA | Canada (top level internet domain) | 加拿大（顶级互联网域） |
| CA | California (US postal abbreviation) | 加利福尼亚州（美国邮政缩写） |
| CA | Council of Administration (Universal Postal Union) | 行政理事会（万国邮政联盟） |
| CA | Climate Audit (website) | 气候审计（网站） |