n. 1 a the sixth planet from the sun, with a system of broad flat rings circling it, and the most distant of the five planets known in the ancient world. b Astrol. Saturn as a supposed astrological influence on those born under its sign, characterized by coldness and gloominess. 2 Alchemy the metal lead. Saturnian adj.
[ L Saturnus, Roman god of agriculture, identified with Kronos, father of Zeus, perh. f. Etruscan ]