Where does “regiomontano” come from?

regiomontano (Spanish) comes from Spanish regio, from Italian regio, from Latin regius, from Latin rēx, from Proto-Italic rēks, from Proto-Indo-European h₃rḗǵs, from Proto-Indo-European h₃reǵ- — to straighten, to right oneself; right; just.

Ancestry of “regiomontano”, step by step

regiomontano traces back through two separate lines of ancestry.

via Spanish regio

StepLanguageWordMeaning
1Spanishregioroyal; stupendous; Monterreyan, born in...
2Italianregioroyal
3LatinregiusOf or pertaining to a king; kingly, regal, royal;...
4Latinrēxking, ruler
5Proto-Italicrēksking
6Proto-Indo-Europeanh₃rḗǵsking, ruler
7Proto-Indo-Europeanh₃reǵ-to straighten, to right oneself; right; just

via Spanish montano

StepLanguageWordMeaning
1Spanishmontanomontane
2LatinMontānusof or pertaining to a mountain, especially
3Latinmōnsmountain, mount
4Proto-Italic*monts
5Proto-Indo-Europeanmen-to think, mind; spiritual activity; to stay,...
Every word from Proto-Indo-European h₃reǵ-Every word from Proto-Indo-European h₃rḗǵsEvery word from Proto-Italic rēks