Where does “исследоваться” come from?
исследоваться (Russian) comes from Russian иссле́довать, from Russian след, from Old East Slavic слѣдъ, from Proto-Slavic slědъ, from Latvian slaidus, from Proto-Balto-Slavic sleid-, from Proto-Indo-European sleidʰ- — slippery, to slide.
исследоваться (Russian): passive of иссле́довать
Ancestry of “исследоваться”, step by step
| Step | Language | Word | Meaning |
|---|
| 1 | Russian | иссле́довать | to research; to explore, examine |
| 2 | Russian | след | track; footprint, footstep; trace, sign |
| 3 | Old East Slavic | слѣдъ | trace, track |
| 4 | Proto-Slavic | slědъ | track, trace |
| 5 | Latvian | slaidus | accusative plural masculine form of slaids |
| 6 | Proto-Balto-Slavic | sleid- | — |
| 7 | Proto-Indo-European | sleidʰ- | slippery, to slide |