transmission frequency of the television picture.
any of the frequencies present in the output of a television camera, from almost 0 to over 4 megahertz.
any frequency applied to the receiver's picture tube in order to display the picture.
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British Dictionary definitions for video frequency
the frequency of a signal conveying the image and synchronizing pulses in a television broadcasting system. It lies in the range from about 50 hertz to 8 megahertz
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