malanga coco noun1 •A variety of malanga, Xanthosoma sagittifolium, a starchy tropical root vegetable related to taro, distinguished by having corms that are round like coconuts.Tropical tubers alone are staggering in their diversity, including white and yellow true yams, sweet potatoes, yucca, yautia, African yams, malanga coco, fresh batata, and several kinds of potatoes. — 2010 formsmalangas coco