Multiply

Verb

Template:Ti verb If you multiply $x$ by $y$ , you add $x$ to itself $y$ times.
Nine multiplied by eleven is ninety nine ( $9 \times 11 = 99$ ).
Template:Ti verb If something multiplies, more and more of it exist.
Problems have multiplied since the beginning of the week.
Template:Intransitive If living things multiply, the have babies, or they make more of themselves.
The bugs seem to be multiplying.