You searched for: “electrical transcription
electrical transcription (s) (noun),electrical transcriptions (pl)
1. A recording of a complete radio program, made especially for broadcast purposes.
2. A radio broadcast from a phonograph record or the phonograph record itself.
3. A radio program broadcast from a special phonograph record or tape recording or the recording itself.

When radio stations first started to record programs, they recorded on "electrical transcription disks".

This entry is located in the following units: electro-, electr-, electri- (page 20) trans-, tran-, tra- (page 2)