Where does “rovnoběžnost” come from?

rovnoběžnost (Czech) comes from Czech rovnoběžný, from Czech běžet, from Old Czech běžěti, from Proto-Slavic běžati, from Proto-Balto-Slavic bēˀgjā́ˀtei, from Proto-Indo-European bʰégʷ-y-eh₂-ti, from Proto-Indo-European bʰegʷ- — to flee; to run.

rovnoběžnost (Czech): parallelism

Definitions

parallelism

Ancestry of “rovnoběžnost”, step by step

Step	Language	Word	Meaning
1	Czech	rovnoběžný	parallel
2	Czech	běžet	to run
3	Old Czech	běžěti	—
4	Proto-Slavic	běžati	to run, escape
5	Proto-Balto-Slavic	bēˀgjā́ˀtei	to run, flee
6	Proto-Indo-European	bʰégʷ-y-eh₂-ti	—
7	Proto-Indo-European	bʰegʷ-	to flee; to run

Every word from Proto-Indo-European bʰegʷ- →

rovnoběžnost — Etymology, Origin & Word History | Etymology Explorer