Erythrite

·noun A rose-red mineral, crystallized and earthy, a hydrous arseniate of cobalt, known also as cobalt bloom;

— called also erythrin or erythrine.

II. Erythrite ·noun 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.