o.n.o.
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o.n.o.
(in advertisements in Britain, Australia, and New Zealand) abbreviation for
(Commerce) or near(est) offer: £50 o.n.o..
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014