What is it called when you multiply something eight times? [closed]

I know that the prefix for eight is "oct". Does this mean that the word I am looking for starts with"oct"? I have done quite a bit of research. Almost every time the first website listed is this one. I really hope that this will be the end of my research! Thank you!


Octuple:

to make eight times as much or as many. (M-W)

Or

Eightfold:

(Mathematics) by or up to eight times as much.

(Collins English Dictionary)