IPA: /ˈmʌltɪplaɪ/
KK: /ˈmʌltəˌplaɪ/
To increase a number by a certain factor, resulting in a larger number.
If you multiply 2 by 3, you get 6.
To increase in number or amount, often through the process of multiplication or reproduction.
The bacteria will multiply rapidly in warm conditions.
Past: multiplied
Past Participle: multiplied
To increase a number by adding it to itself a certain number of times, or to perform the mathematical operation of multiplication.
If you multiply 3 by 4, you get 12.
Past: multiplied
Past Participle: multiplied
Multiply → It is formed from "multi-" (from Latin "multus", meaning many) and "plicare" (meaning to fold). The word "multiply" means to fold or increase many times, thus creating a larger quantity.
Think of 'many' ('multi-') being 'folded' ('plicare') together to create a larger amount — that's why multiply means to increase in number.