Quinoa (Chenopodium quinoa; (/ ˈ k iː n w ɑː / or / k ɪ ˈ n oʊ. ə /, from Quechua kinwa or kinuwa) is a flowering plant in the amaranth family.It is a herbaceous annual plant grown as a grain crop primarily for its edible seeds.Quinoa is not a grass, but rather a pseudocereal botanically related to spinach and amaranth (Amaranthus spp.).. Quinoa …