multiply
To increase the amount, degree or number of (something).
Other meanings
To perform multiplication on (a number).
“when you multiply 3 by 7, you get 21; he multiplied several numbers”
To grow in number.
Where this comes from
This definition is adapted from “multiply” on Wiktionary, by its contributors, published under CC BY-SA 4.0. This page is published under the same licence.