initialism of Sa Majesté (“His Majesty or Her Majesty”); initialism of Scientiæ Magister, an academic degree offered by Harvard University and MIT. These degree abbreviations appear to be backwards because they follow the tradition of Latin degree names
initialism of système babillard electronique or système de babillard electronique; a BBS (bulletin board system); initialism of système des bulletins electroniques ; a BBS (bulletin board service)
initialism of Société des Bourses Françaises, a name for the Paris Bourse stock exchange; a stock market index code for the French stock market, the Paris Bourse
acronym of Syndicat des Constructeurs d'Appareils Radiorécepteurs et Téléviseurs; French-originated standard and associated connector for electronic equipment
acronym of Société Européenne de Production de l'avion Ecole de Combat et d'Appui Tactique (“European company for the production tactical combat support and training aircraft”)