IPA: //ˌmʌltɪˈplɪkətɪv//
KK: /mʌlˈtɪplɪkətɪv/
Related to the process of multiplying or increasing in number.
In mathematics, a multiplicative relationship means that one quantity increases as another quantity increases.
Multiplicative → It is formed from "multi-" (meaning many) and "plicare" (meaning to fold or to multiply). The word "multiplicative" refers to the property of being able to multiply or increase in number.
Think of 'many' ('multi-') being 'folded' or 'increased' ('plicare') — that's why multiplicative relates to multiplication.