octothorp

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octothorp

(ˈɒktəˌθɔːp) n1. (Mathematics) a symbol that is used in printing, in mathematics and, commonly, on a telephone keypad; it consists of two horizontal lines, one above the other, with two diagonal lines, one beside the other, through them. Also called: hash sign 2. (Telecommunications) a symbol that is used in printing, in mathematics and, commonly, on a telephone keypad; it consists of two horizontal lines, one above the other, with two diagonal lines, one beside the other, through them. Also called: hash sign 3. (Printing, Lithography & Bookbinding) a symbol that is used in printing, in mathematics and, commonly, on a telephone keypad; it consists of two horizontal lines, one above the other, with two diagonal lines, one beside the other, through them. Also called: hash sign