Radio

Definition

The term "radio" refers to the technology or system of transmitting signals, including sound and other data, through electromagnetic waves. It can also denote a device that receives such signals.

Parts of Speech

• Noun
• Verb

Pronunciation

American English

• IPA Pronunciation: /ˈreɪ.di.oʊ/
• Respelling: RAY-dee-oh

British English

• IPA Pronunciation: /ˈreɪ.di.əʊ/
• Respelling: RAY-dee-oh

Etymology

The word "radio" originates from the Latin "radius," meaning "ray" or "beam." The term was adopted in the early 20th century to describe wireless communication using electromagnetic waves, shortened from "radiotelegraphy."

Derivatives

• Radiowave (noun)
• Radiotelegraphy (noun)
• Radiophonic (adjective)
• Radiocommunication (noun)
• Radiography (noun)

Synonyms

• Broadcast
• Transmitter
• Receiver

Antonyms

• None

Usage

The term "radio" is widely used in communication and entertainment contexts. For example, "She listened to the news on the radio," or "They used a two-way radio to communicate."

Related Terms

• Television: A system for transmitting visual images and sound.
• Electromagnetic wave: Waves of the electromagnetic field used in wireless communication.
• Broadcasting: The transmission of programs or signals to a broad audience.

Detailed Definitions

Noun

• A device for receiving radio signals and broadcasting audio content:
  • Example: "The radio played music throughout the evening."
• A system of communication or entertainment using electromagnetic waves:
  • Example: "The army relied on radio to transmit messages."

Verb

• To send a message using radio communication:
  • Example: "The pilot radioed for help during the emergency."