mul ‧ ti ‧ pli ‧ ca ‧ tion /ˌmʌltəpləˈkeɪʃ ə n, ˌmʌltɪpləˈkeɪʃ ə n/ BrE AmE noun [uncountable]
1 . a method of calculating in which you add a number to itself a particular number of times ⇨ division
2 . formal a large increase in the size, amount, or number of something:
a multiplication of the number of forms to fill out