purpurogallin

noun

pur·​pu·​ro·​gal·​lin

ˌpərpyərōˈgalə̇n

plural -s

: a red crystalline phenolic ketone dye C₁₁H₄O(OH)₄ that occurs naturally in various plant galls as the diglucoside and is made synthetically by oxidation of pyrogallol

Word History

Etymology

Latin purpura purple + English -o- + pyrogallol + -in

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