Where does “semisótano” come from?

semisótano (Spanish) comes from Spanish sótano, from Old Spanish sótalo, from Vulgar Latin subtulum, from Latin subtus, from Latin sub, from Proto-Italic supo, from Proto-Indo-European upó, from Proto-Indo-European h₃ewp-.

semisótano (Spanish): basement, lower floor

Definitions

basement, lower floor

Ancestry of “semisótano”, step by step

Step	Language	Word	Meaning
1	Spanish	sótano	cellar; basement; pit
2	Old Spanish	sótalo	—
3	Vulgar Latin	subtulum	—
4	Latin	subtus	below, underneath, beneath
5	Latin	sub	under, beneath; behind; at the feet of
6	Proto-Italic	supo	under
7	Proto-Indo-European	upó	under, below
8	Proto-Indo-European	h₃ewp-	—

Every word from Proto-Indo-European h₃ewp- →Every word from Proto-Indo-European upó →Every word from Proto-Italic supo →