Radio
/ˈreɪ.di.oʊ/noun
A technology that uses electromagnetic waves to transmit audio and information over distances.
Did you know?The term 'radio' comes from the Latin 'radius', meaning 'ray' or 'spoke', hinting at the mystical power of light and sound waves in communication.
Etymological Timeline
Proto-Indo-European
PIE
*rad-
“to shine or beam, suggesting the concept of rays or light.”
Latin
Latin
radius
“a ray or spoke, particularly in terms of light or circular shapes.”
17th Century
Latin
radio
“a term derived from 'radius', implying the transmission of rays.”
19th Century
English
radiotelegraphy
“the use of radio waves to communicate telegraphically, marking the dawn of radio technology.”
20th Century
English
radio
“the technology and medium for transmitting sound and information through electromagnetic waves.”