无线电

• Pinyin: wú xiàn diàn
• Hanzi breakdown: 无线 = wireless; 电 = 日 + 乚 (sun with a curved hook — electricity, lightning, electromagnetic energy)

Meaning

Radio; wireless electromagnetic transmission. Refers to the technology of transmitting signals and information through radio waves without physical connections.

Encompasses broadcast radio, military communications, aviation radio, amateur radio (业余无线电), and radar. 无线电 is the formal technical term; 收音机 refers specifically to a radio receiver. Used in scientific, historical, and military contexts.

Examples

1. 早期的无线电通信技术极大地改变了人类传递信息的方式。 Early radio communication technology greatly changed the way humans transmitted information.
2. 飞行员通过无线电与地面塔台保持实时通话，确保飞行安全。 Pilots stay in real-time communication with the control tower via radio to ensure flight safety.
3. 他年轻时对无线电技术充满热情，自己动手组装了第一台收音机。 When he was young, he was passionate about radio technology and assembled his first radio receiver himself.

Usage Guide

Context: technology, aviation, military, history, communications

Tone: neutral

Do Say

• 二战期间，无线电通信在军事行动中发挥了决定性作用——盟军通过破译敌方无线电密码获取了大量关键情报，这在相当程度上加速了战争的终结。(During the Second World War, radio communication played a decisive role in military operations — the Allied forces obtained vast amounts of critical intelligence by deciphering enemy radio codes, which considerably accelerated the end of the war.)
• 全球有许多业余无线电爱好者，他们在灾害通信中常是恢复联络的第一批力量。(There are many amateur radio enthusiasts around the world, and in disaster communications they are often among the first to restore contact.)

Don't Say

• 无线电 when referring to a radio set or receiver in everyday conversation — use 收音机 for a radio device; 无线电 refers to the technology or the electromagnetic waves themselves, not the physical appliance

Origin & History

无线 (wireless) + 电 (electricity, electromagnetic) — wireless electromagnetic signal technology

Cultural Context

Generation: All ages

Social background: Universal