a radio or television programme in which listeners' or viewers' questions, comments, etc, are telephoned to the studio and broadcast live
Also called (in Britain and certain other countries): phone-in
open-line in American English
(ˈoupənˌlain)
adjective
(of a radio or TV show)
maintaining open telephone lines to permit listeners or viewers to phone a program with comments, questions, requests, etc.; call-in
Word origin
[1965–70]This word is first recorded in the period 1965–70. Other words that entered Englishat around the same time include: Coriolis effect, hired gun, isometric exercise, red-eye, stun gun