The only free and comprehensive online etymological dictionary of the Spanish language
suelo m. (Noun) "floor," "ground"
12th cent. From Latin solum "bottom," "floor," "ground." From Proto-Italic *solo- 'id.' From Proto-Indo-European *sol-o- "living space." See also suelo.
Indo-European
Romance
Portuguese solo, solho, Catalan sòl, French sol, Italian suolo, Romanian sol
Germanic
Old Norse salr "hall, "house," Old High German sal "hall," Old Saxon seli 'id.,' Old English sæl 'id.'
Balto-Slavic
Old Church Slavonic selo "field," "village," Russian seló "village," Old Czech selo "field," Polish sioɫo "soil," "village," Slovene sélọ "colony," "village," Lithuanian salà "island," "field"