Thanks for using this online dictionary, we have been helping millions of people improve their use of the english language with its free online services. English definition of protocatechuic is as below...

Protocatechuic :: Protocatechuic (a.) Pertaining to, derived from, or designating, an organic acid which is obtained as a white crystalline substance from catechin, asafetida, oil of cloves, etc., and by distillation itself yields pyrocatechin..

Orsellinic :: Orsellinic (a.) Pertaining to, or designating, an organic acid obtained by a partial decomposition of orsellic acid as a white crystalline substance, and related to protocatechuic acid..

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