More about xeric
Xeric is an adjective used in ecology, botany, and biology in general to characterize a very dry environment or an organism that can grow in such an environment. Xeric comes from Greek xērós “dry, withered,” and it appears to be obviously related to the Greek noun xerón “dry land, mainland,” but the long ē and the short e are problematic. If xērós and xerón are related, they will come from the Proto-Indo-European root kser– (also ksēr-) “dry,” source of Latin serescere “to become dry,” serēnitās “dry, bright, clear weather or sky” (English serenity), and serēnus “clear, cloudless, fine” (English serene). Xeric entered English in the first half of the 20th century.