Where does “Πρόθοος” come from?

Πρόθοος (Ancient Greek) comes from Ancient Greek πρό-, from Ancient Greek πρό, from Proto-Indo-European pró, from Proto-Indo-European per-, from Proto-Indo-European pr̥tós — passed , crossed.

Πρόθοος (Ancient Greek): Prothous, one of the Greek leaders in the Trojan War and commander of the Magnesians

Definitions

Prothous, one of the Greek leaders in the Trojan War and commander of the Magnesians

Ancestry of “Πρόθοος”, step by step

Step	Language	Word	Meaning
1	Ancient Greek	πρό-	in front of; before
2	Ancient Greek	πρό	before; before, in front, forth, forward; before,...
3	Proto-Indo-European	pró	toward, leading to
4	Proto-Indo-European	per-	before, in front; first; to go through
5	Proto-Indo-European	pr̥tós	passed , crossed

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