vsb abbreviation for (Electronics) vestigial sideband: a transmission in an amplitude-modulated signal in which one complete sideband is transmitted, but only part of the other Collins English Dictionary ? Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014