One of the mysteries of the English language finally explained.
1A system for transmitting images at a distance by means of radio waves; (formerly) specifically = "television" (now historical).
2The combination of a radio programme (often recorded) with a specially prepared film strip or series of slides, especially as an educational aid.
3The simultaneous broadcasting of programmes on radio and television. rare.
1920s; earliest use found in Popular Science Monthly. From radio- + vision. With the specifically use in sense 1 compare earlier television.
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