Where does “щелочной” come from?
щелочной (Russian) comes from Russian щёлочь, from Russian -ь, from Old East Slavic -ь, from Proto-Slavic -ь, from Proto-Indo-European -is — Forms nouns from verbs.
Ancestry of “щелочной”, step by step
| Step | Language | Word | Meaning |
|---|
| 1 | Russian | щёлочь | alkali |
| 2 | Russian | -ь | |
| 3 | Old East Slavic | -ь | — |
| 4 | Proto-Slavic | -ь | Forms nouns; From adjectives; From participles |
| 5 | Proto-Indo-European | -is | Forms nouns from verbs |