Where does “Präkambrium” come from?

Präkambrium (German) comes from German prä-, from Latin [[prae-]], [[prae]].

Ancestry of “Präkambrium”, step by step

Step	Language	Word	Meaning
1	German	prä-	pre-, prae-
2	Latin	[[prae-]], [[prae]]	—

Präkambrium — Etymology, Origin & Word History | Etymology Explorer