Where does “décimo” come from?

décimo (Portuguese) comes from Old Portuguese deçimo, from Latin Decimus, from Latin decem, from Latin -nus, from Proto-Italic -nos, from Proto-Indo-European -nós — Creates verbal adjectives from roots.

décimo (Portuguese): tenth

Definitions

  1. tenth

Ancestry of “décimo”, step by step

StepLanguageWordMeaning
1Old Portuguesedeçimo—
2LatinDecimusoriginally used for a tenth-born son
3Latindecemten; 10
4Latin-nus-an
5Proto-Italic-nosCreates verbal adjectives from verb stems
6Proto-Indo-European-nósCreates verbal adjectives from roots
Every word from Proto-Indo-European -nós →Every word from Latin -nus →Every word from Latin decem →