Where does “3a” come from?

3a (Spanish) comes from Spanish tercera, from Latin tertiārius, from Latin tertius, from Latin trēs, from Proto-Italic trēs, from Proto-Indo-European *tréyes.

3a (Spanish): Alternative form of 3ª

Definitions

  1. Alternative form of 3ª

Ancestry of “3a”, step by step

StepLanguageWordMeaning
1Spanishtercerafeminine singular of tercero; a third
2Latintertiāriuscontaining a third part
3Latintertiusthird, the ordinal number after secundus and...
4Latintrēsthree; 3
5Proto-Italictrēsthree
6Proto-Indo-European*tréyes—
Every word from Proto-Indo-European *tréyes →Every word from Proto-Italic trēs →Every word from Latin trēs →