Where does “*pra” come from?

*pra (Proto-Balto-Slavic) comes from Proto-Indo-European pró, from Proto-Indo-European per-, from Proto-Indo-European pr̥tós — passed , crossed.

Ancestry of “*pra”, step by step

StepLanguageWordMeaning
1Proto-Indo-Europeanprótoward, leading to
2Proto-Indo-Europeanper-before, in front; first; to go through
3Proto-Indo-Europeanpr̥tóspassed , crossed

Words derived from “*pra”

Every word from Proto-Indo-European pr̥tós →Every word from Proto-Indo-European per- →Every word from Proto-Indo-European pró →