The multiplication-sign is a symbol that represents mathematical multiplication. There are several synonyms for this symbol, including times sign, cross sign, and dot sign. The times sign is perhaps the most commonly used synonym and is denoted by an "x" or "×". The cross sign looks like an "x" with shorter lines and is sometimes used to indicate multiplication in certain contexts. The dot sign, represented by a small dot, is less common but is still used in some settings, such as in vector calculus. Overall, while the multiplication-sign is the standard symbol for multiplication, the various synonyms provide flexibility and context-dependent options for indicating the operation.