Russian чрез

← Old Church Slavonic чрѣсъ (borrowed)

← Old Church Slavonic ⱍⱃⱑⱄⱏ (link)

← Proto-Indo-European *(s)kert- (derived)

← Russian че́рез (doublet)

← Proto-Slavic *čersъ (derived)

→ Russian через (doublet)

→ Russian чрез- (mention)