open-line: Meaning and Definition of

o•pen-line

Pronunciation: (ō'pun-līn"), [key]
— adj.
  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.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
open letter open market
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