A show requiring members of the public to telephone the studio.(noun)
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Use "phone-in" in a sentence
"The e-petition process and the backbench committee have spawned a process in which cross-party issues – often the subjects of passionate phone-in debates – are discussed in the chamber."
"Of all the Jungle Book characters Putin could have picked to project himself as the voice of reason during a live, nationally televised 4½-hour phone-in – Baloo, Bagheera, even the man-cub Mowgli – the 30ft python Kaa was not he."
"Over on Radio 4, things were also going a bit 5 Live, with Jane Garvey hosting a phone-in on stay-at-home dads on Woman's Hour."