IPA: /ˈpriːviəsli/
KK: /ˈpriːviəsli/
At a time before now; earlier than the present moment.
I had previously visited that museum before it closed.
Previously → It is formed from "pre-" (meaning before) and "vius" (from Latin "via", meaning way or road) and the suffix "-ly" (meaning in a manner). The word "previously" means in a manner that is before in time or order.
Think of 'pre-' meaning before, and 'via' as a way — so previously means in a way that comes before.