Where does “mannagrass” come from?

mannagrass (English) comes from English grass, from Middle English gras, from Old English græs, from Proto-West Germanic gras, from Proto-Germanic grasą, from Proto-Indo-European ǵʰreh₁- — to become green, grow; to grow; to green, to grow.

mannagrass (English): Any of several perennial grasses of the genus...

Definitions

  1. Any of several perennial grasses of the genus...

Ancestry of “mannagrass”, step by step

mannagrass traces back through two separate lines of ancestry.

via English grass

StepLanguageWordMeaning
1EnglishgrassAny plant of the family Poaceae, characterized by...
2Middle EnglishgrasA grass; Any plant; especially a herbaceous one;...
3Old Englishgræsgrass
4Proto-West Germanicgrasgrass
5Proto-Germanicgrasągrass
6Proto-Indo-Europeanǵʰreh₁-to become green, grow; to grow; to green, to grow

via English manna

StepLanguageWordMeaning
1EnglishmannaFood miraculously produced for the Israelites in...
2Italianmannamanna (all senses)
3Latinmannamanna
4Ancient Greekμάνναmanna
5HebrewמןAlternative form of מִ־; manna
Every word from Proto-Indo-European ǵʰreh₁-Every word from Proto-Germanic grasąEvery word from Proto-West Germanic gras