Seid

Seid in Norse mythology, was a magical art universally employed among the Vanes, in which Freya, who was descended from the Vanes, was particularly skilled, and in which she had received instruction from Odin. Nothing definite is known respecting the art itself; but it would seem that a degree of knowledge in chemistry lay at its base, by which all kinds of elements became known. It was regarded as beneath the dignity of a man, however, and Odin was the only one who made use of it.