Where does “granu” come from?

granu (Corsican) 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.

granu (Corsican): wheat

Definitions

wheat

Ancestry of “granu”, step by step

Step	Language	Word	Meaning
1	Latin	grānum	grain, seed, small kernel
2	Proto-Italic	grānom	grain
3	Proto-Indo-European	ǵr̥h₂nóm	grain
4	Proto-Indo-European	ǵr̥h₂nós	matured, grown old
5	Proto-Indo-European	ǵerh₂-	to grow old, to mature

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