ten times; tenfold
Indicates a quantity or degree multiplied by ten. Used as a noun or adverbially with に.
この箱はあの箱の十倍の重さだ。
This box is ten times as heavy as that one.
人口が十年で十倍になった
The population increased tenfold in ten years.
Compound of 十 (ten) and 倍 (times, -fold).