Where does “пятнадцатиугольник” come from?
пятнадцатиугольник (Russian) comes from Russian у́гол, from Proto-Slavic ǫgъlъ, from Proto-Balto-Slavic *ángulas, from Proto-Indo-European h₂engulos, from Proto-Indo-European h₂eng- — curve, bend.
пятнадцатиугольник (Russian): pentadecagon
Definitions
- pentadecagon
Ancestry of “пятнадцатиугольник”, step by step
пятнадцатиугольник traces back through two separate lines of ancestry.
via Russian у́гол
| Step | Language | Word | Meaning |
|---|---|---|---|
| 1 | Russian | у́гол | angle; corner |
| 2 | Proto-Slavic | ǫgъlъ | corner, angle |
| 3 | Proto-Balto-Slavic | *ángulas | — |
| 4 | Proto-Indo-European | h₂engulos | joint? |
| 5 | Proto-Indo-European | h₂eng- | curve, bend |
via Russian пятна́дцать
| Step | Language | Word | Meaning |
|---|---|---|---|
| 1 | Russian | пятна́дцать | fifteen (15) |
| 2 | Russian | пять | five; second-person singular imperative... |
| 3 | Old Church Slavonic | пѧть | five |
| 4 | Proto-Slavic | pętь | five |
| 5 | Proto-Indo-European | pénkʷe | five |