Where does “pyörähdyspinta” come from?
pyörähdyspinta (Finnish) comes from Finnish pyörähdys, from Finnish pyörähtää, from Finnish ahtaa, from Proto-Finnic aktadak, from Proto-Uralic ëkta- — to hang up.
pyörähdyspinta (Finnish): A surface of revolution
Ancestry of “pyörähdyspinta”, step by step
| Step | Language | Word | Meaning |
|---|
| 1 | Finnish | pyörähdys | A turn, rotation |
| 2 | Finnish | pyörähtää | to spin once; to twirl; to turn around; often... |
| 3 | Finnish | ahtaa | to cram, stuff, fill, pack full; to supercharge;... |
| 4 | Proto-Finnic | aktadak | to hang up, especially traps; grain to dry in a... |
| 5 | Proto-Uralic | ëkta- | to hang up |