Source : Webster's Revised Unabridged Dictionary (1913)

Erythrite \E*ryth"rite\, n. [Gr. 'eryqro`s red.]
   1. (Chem.) A colorless crystalline substance, {C4H6.(OH)4},
      of a sweet, cooling taste, extracted from certain lichens,
      and obtained by the decomposition of erythrin; -- called
      also {erythrol}, {erythroglucin}, {erythromannite},
      {pseudorcin}, {cobalt bloom}, and under the name {phycite}
      obtained from the alga {Protococcus vulgaris}. It is a
      tetrabasic alcohol, corresponding to glycol and glycerin.

Source : WordNet®

erythrite
     n : a reddish mineral consisting of hydrated cobalt arsenate in
         monoclinic crystalline form and used in coloring glass;
         usually found in veins bearing cobalt and arsenic [syn: {cobalt
         bloom}]