meaning of millerite
1. A believer in the doctrine of William Miller (d. 1849), who taught that the end of the world and the second coming of Christ were at hand.
2. A sulphide of nickel, commonly occurring in delicate capillary crystals, also in incrustations of a bronze yellow; -- sometimes called hair pyrites.
3. a yellow mineral consisting of nickel sulfide; a minor source of nickel