Where does “ayuno” come from?

ayuno (Bikol Central) comes from Spanish ayuno, from Old Spanish ayuno, from Vulgar Latin aiunus, from Latin iēiūnus, from Latin iaiūnus, from Proto-Italic jagjūnos, from Proto-Indo-European Hyeh₂ǵ-yu-, from Proto-Indo-European Hyeh₂ǵ-ye/o- — to sacrifice.

Ancestry of “ayuno”, step by step

StepLanguageWordMeaning
1Spanishayunofasting; fast
2Old Spanishayuno
3Vulgar Latinaiunusfasting; a fast
4Latiniēiūnusfasting, abstinent, hungry
5Latiniaiūnus
6Proto-Italicjagjūnos
7Proto-Indo-EuropeanHyeh₂ǵ-yu-
8Proto-Indo-EuropeanHyeh₂ǵ-ye/o-to sacrifice
Every word from Proto-Indo-European Hyeh₂ǵ-ye/o-Every word from Proto-Indo-European Hyeh₂ǵ-yu-Every word from Proto-Italic jagjūnos