Erythrin

{ E*ryth"rin, E*ryth"rine (?) }, n. [Gr. 'eryqro`s red.] 1. (Chem.) A colorless crystalline substance, C₂₀H₂₂O₁₀, extracted from certain lichens, as the various species of Rocella. It is a derivative of orsellinic acid. So called because of certain red compounds derived from it. Called also erythric acid.

2. (Min.) See Erythrite, 2.