Where does “terțiar” come from?

terțiar (Romanian) comes from French tertiaire, from Latin tertiārius, from Latin tertius, from Latin trēs, from Proto-Italic trēs, from Proto-Indo-European *tréyes.

terțiar (Romanian): tertiary

Definitions

  1. tertiary

Ancestry of “terțiar”, step by step

StepLanguageWordMeaning
1Frenchtertiairetertiary
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 →