SO

/SO/ , n. 1. (also S.O. ) Abbrev. for Significant Other, almost invariably
written abbreviated and pronounced /SO/ by hackers. Used to refer to one's
primary relationship, esp. a live-in to whom one is not married. See MOTAS ,
MOTOS , MOTSS. 2. [techspeak] The Shift Out control character in ASCII
(Control-N, 0001110).