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📕 rednote ID(小红书号)：3881567312

Radio Definition, Uses, and Examples (2 meaning)

Meaning 1：broadcast receiver (radio)

radio 🔊

/ˈreɪ.di.oʊ/

A machine or device you use to listen to music, news, or talk shows sent by broadcasting stations.

Classic wooden radio device for listening to broadcasts

broadcast receiver 🔊

➕

/ˈbrɔːd.kæst rɪˈsiː.vər/

A device that receives radio signals and converts them into sound, used for listening to music, news, and other audio content.

📁 Category：Technological Inventions 🔖 Level：Beginner

📘 Details & Usage

📖 Root Explanation

From Latin 'radius' (ray), for electromagnetic waves radiating from a transmitter.

💡 Mnemonic

Think of a 'ray' of sound: radio sends music through invisible rays.

📖 Example

Every morning during breakfast, she turns on the radio to listen to her favorite light music. 🔊 Every morning during breakfast, she turns on the radio to listen to her favorite light music.

🔗 Collocations

turn on the radio – activate the radio to receive broadcasts

listen to the radio – tune in and listen to radio programs

radio station – an organization that produces and transmits radio programs

🔄 Synonyms

receiver (n.) – a device that receives signals and converts them into sound

tuner (n.) – a device used to select specific radio frequencies

wireless (n.) – an older term for a radio receiver, especially in British English

🌱 Derivatives

radial (adj.) – relating to rays or radii

radiate (v.) – to emit rays or waves

radioactive (adj.) – emitting radiation

📖 Cultural Story

The term 'radio' emerged in the late 19th century from Latin 'radius' (ray). Guglielmo Marconi's wireless telegraphy experiments popularized it, leading to modern broadcasting.

Meaning 2：wireless communication technology (radio)

radio 🔊

/ˈreɪ.di.oʊ/

The technology or system that sends and receives information (like sound or data) through the air using invisible waves instead of wires.

Radio waves radiating from tower to smartphone diagram

wireless communication technology 🔊

➕

/ˈwaɪər.ləs kəˌmjuː.nɪˈkeɪ.ʃən tekˈnɑː.lə.dʒi/

The method of transmitting information through electromagnetic waves without physical connections, used for broadcasting, communication, and data transfer.

📁 Category：Technological Inventions 🔖 Level：Intermediate

📘 Details & Usage

📖 Example

Scientists use powerful radio telescopes to listen for signals from distant stars and galaxies. 🔊 Scientists use powerful radio telescopes to listen for signals from distant stars and galaxies.

🔗 Collocations

radio waves – electromagnetic waves used for transmitting signals

radio frequency – the rate of oscillation of radio waves, measured in hertz

radio communication – the transmission of information via radio waves

🔄 Synonyms

wireless (adj.) – relating to communication without wires, using radio waves

broadcasting (n.) – the transmission of programs or information via radio or television

telecommunication (n.) – the communication of information over distances using electronic means

🚫 Antonyms

cable (n.) – a system of wires used for transmitting signals, as opposed to wireless

🌱 Derivatives

radioactive (adj.) – emitting radiation, related to radio waves but different context

radiography (n.) – the use of X-rays or gamma rays to create images

radar (n.) – a system using radio waves for detecting objects