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purpurogallin

noun pur·pu·ro·gal·lin \ ˌpərpyərōˈgalə̇n \
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Definition of purpurogallin

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

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Origin and Etymology of purpurogallin

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

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