Is Nineteen Fold a Word?

Nineteen times as many.

What is 20 fold?

having twenty sections, aspects, divisions, kinds, etc. being twenty times as large, great, many, etc.

Is 9 fold the same as 9 times?

nine times as great or as much. having nine elements or parts. in a ninefold manner or measure; to or by nine times as much: to increase one's income ninefold.