Definition of purpurogallin in English:

purpurogallin

Pronunciation /ˌpəːpjʊrə(ʊ)ˈɡalɪn/

noun

Chemistry
  • An orange-red crystalline dye, originally prepared by mild oxidation of pyrogallol and later found to occur in some oak galls.

    Purpurogallin is a tetrahydric phenol with fused tropolone and trihydroxybenzene rings; C₁₁H₈O₅.

Origin

Late 19th century; earliest use found in Journal of the Chemical Society. From French purpurogalline from purpur- (in purpurine) + -ogall- + -ine.