nouns
the act of producing offspring or multiplying by such production
a multiplicative increase
"repeated copying leads to a multiplication of errors"; "this multiplication of cells is a natural correlate of growth"
is a type of (narrower)
a process of becoming larger or longer or more numerous or more important
"the increase in unemployment"; "the growth of population"
an arithmetic operation that is the inverse of division; the product of two numbers is computed
"the multiplication of four by three gives twelve"; "four times three equals twelve"