Word Origin & History
lunar
"of or pertaining to the moon," 1626, from O.Fr. lunaire, from L. lunaris "of the moon," from luna "moon," (with capital L-) "moon goddess," from *leuksna- (cf. O.C.S. luna "moon," O.Pruss. lauxnos "stars," M.Ir. luan "light, moon"), from the same source as lux, lumen "light." The luna moth (1884) so called for the crescent-shaped markings on its wings.