Where does “grão” come from?

grão (Old Portuguese) comes from Latin grānum, from Proto-Italic grānom, from Proto-Indo-European ǵr̥h₂nóm, from Proto-Indo-European ǵr̥h₂nós, from Proto-Indo-European ǵerh₂- — to grow old, to mature.

Ancestry of “grão”, step by step

grão traces back through two separate lines of ancestry.

via Latin grānum

StepLanguageWordMeaning
1Latingrānumgrain, seed, small kernel
2Proto-Italicgrānomgrain
3Proto-Indo-Europeanǵr̥h₂nómgrain
4Proto-Indo-Europeanǵr̥h₂nósmatured, grown old
5Proto-Indo-Europeanǵerh₂-to grow old, to mature

via Latin gradus

StepLanguageWordMeaning
1Latingradusa step, pace; a stage, degree; a rank
2Proto-Italicgraðus—
3Proto-Indo-Europeangʰradʰ-—

Words derived from “grão”

Every word from Proto-Indo-European ǵerh₂- →Every word from Proto-Indo-European ǵr̥h₂nós →Every word from Proto-Indo-European ǵr̥h₂nóm →