Where does “троеперстие” come from?

троеперстие (Russian) comes from Russian перст, from Proto-Slavic pьrstъ, from Proto-Balto-Slavic pírštan, from Proto-Indo-European pr̥-sth₂-o-m, from Proto-Indo-European per-, from Proto-Indo-European pr̥tós — passed , crossed.

троеперстие (Russian): a sign of the cross made with three fingers

Definitions

  1. a sign of the cross made with three fingers

Ancestry of “троеперстие”, step by step

троеперстие traces back through two separate lines of ancestry.

via Russian перст

StepLanguageWordMeaning
1Russianперстfinger
2Proto-Slavicpьrstъfinger
3Proto-Balto-Slavicpírštanfinger
4Proto-Indo-Europeanpr̥-sth₂-o-mtip
5Proto-Indo-Europeanper-before, in front; first; to go through
6Proto-Indo-Europeanpr̥tóspassed , crossed

via Russian тро́е

StepLanguageWordMeaning
1Russianтро́еthree
2Proto-Slavic*trojьthree
Every word from Proto-Indo-European pr̥tós →Every word from Proto-Indo-European per- →Every word from Proto-Indo-European pr̥-sth₂-o-m →