Where does “ierbivor” come from?

ierbivor (Romanian) comes from Romanian iarbă, from Latin herba, from Proto-Indo-European ǵʰreh₁- — to become green, grow; to grow; to green, to grow.

Ancestry of “ierbivor”, step by step

Step	Language	Word	Meaning
1	Romanian	iarbă	grass; herb
2	Latin	herba	grass, herbage; herb; weeds
3	Proto-Indo-European	ǵʰreh₁-	to become green, grow; to grow; to green, to grow

Every word from Proto-Indo-European ǵʰreh₁- →Every word from Latin herba →Every word from Romanian iarbă →