1555, from M.Fr. nomade, from L. Nomas (gen. Nomadis) "wandering groups in Arabia," from Gk. nomas (gen. nomados, pl. nomades) "roaming, roving, wandering" (to find pastures for flocks or herds), related to nomos "pasture," lit. "land allotted," and to nemein "put to pasture," originally "deal out," from PIE base *nem- "to divide, distribute, allot" (see nemesis).