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open-line

[oh-puh n-lahyn] /ˈoʊ pənˌlaɪn/
adjective
1.
(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.
Origin
1965-1970
1965-70
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for open-line

open-line

noun
1.
(Canadian) 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
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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6
8
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