[ oh-puhn-lahyn ]

  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 of open-line

First recorded in 1965–70

Words Nearby open-line Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

How to use open-line in a sentence

  • Harvard had the ball and formed a close "wedge," Yale deployed in open line of battle.

    Harvard Stories | Waldron Kintzing Post

British Dictionary definitions for open-line


  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