Where does “terçeiro” come from?

terçeiro (Old Portuguese) comes from Latin tertiārius, from Latin tertius, from Latin trēs, from Proto-Italic trēs, from Proto-Indo-European *tréyes.

Ancestry of “terçeiro”, step by step

StepLanguageWordMeaning
1Latintertiāriuscontaining a third part
2Latintertiusthird, the ordinal number after secundus and...
3Latintrēsthree; 3
4Proto-Italictrēsthree
5Proto-Indo-European*tréyes—

Words derived from “terçeiro”

Every word from Proto-Indo-European *tréyes →Every word from Proto-Italic trēs →Every word from Latin trēs →