Where does “prax” come from?

prax (Slovak) comes from Latin praxis, from Ancient Greek πρᾶξις, from Ancient Greek πρᾱ́σσω, from Proto-Indo-European per(h₂)-.

prax (Slovak): practice, praxis

Definitions

Step	Language	Word	Meaning
1	Latin	praxis	practice, method, practical experience
2	Ancient Greek	πρᾶξις	deed, act, action, activity; business dealing;...
3	Ancient Greek	πρᾱ́σσω	I do, practice; to do
4	Proto-Indo-European	per(h₂)-	—