the ancient Roman goddess personifying the moon, sometimes identified with Diana.
2.
(in alchemy) silver.
3.
(lowercase) . Also, lunette.Ecclesiastical. the crescent-shaped receptacle within the monstrance, for holding the consecrated Host in an upright position.
late 14c. as an alchemical name for "Silver;" 1520s as "moon," from L. luna "moon," 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.