As a Noun: 1. In mathematics, the symbol (x) which is put between two numbers to show that they are being multiplied. English = multiplication sign. 2. In mathematics, the process of calculating the total of one number multiplied by another number. English = multiplication. As a Verb or Adjective: 1. In mathematics, to calculate the total which you get when you add a number to itself a particular number of times. English = multiply.