noun: a book size one sixty-fourth of the size of a standard uncut sheet of paper (less 7.5 cm (3") in height)
noun: Initialism of science fiction or speculative fiction, often used to avoid having to choose between the two.
noun: Initialism of square feet.
noun: Initialism of spontaneous fission. [(physics) Nuclear fission that occurs spontaneously, instead of being induced by an external stimulus.]
noun: (basketball) Initialism of small forward. [(basketball) A forward who is the shorter of the two forward positions, and often plays behind the power forwards.]
noun: (sports) Abbreviation of semifinal. [(sports) A playoff in the round with only four players or teams left, the stage before the final.]
noun: Initialism of San Francisco. [A major coastal city in California of over 800,000 widely known for its unique culture, architecture, and LGBT population; formerly Yerba Buena (pre-1847).]
noun: (Ireland, UK politics) Initialism of Sinn Féin; an Irish political party. [(Irish politics) An Irish political party committed to the reunification of Ireland.]
noun: (video games) Initialism of Street Fighter.
noun: (motor racing) Initialism of Super Formula.
adjective: (in personal ads) Initialism of smoker-friendly: not objecting to people who smoke tobacco
noun: (dated) Alternative form of SF (science fiction)
