siderism

/S IH1 D ER0 IH0 Z AH0 M/
noun
  1. 1

    (medicine, historical) The supposed curative effects of metals upon the body, in metallotherapy; metallotherapy itself.

  2. 2

    A former system of natural philosophy that posited relationships of inorganic phenomena to organic phenomena and studied pendulums, magnets, and dowsing rods; developed by Johann Wilhelm Ritter (1776โ€“1810) and others.