\El*lag"ic\, a. [F., fr. galle gall (with the letters
reversed).] (Chem.)
Pertaining to, or derived from, gallnuts or gallic acid; as,
ellagic acid.
{Ellagic acid} (Chem.), a white crystalline substance,
   {C14H8O9}, found in bezoar stones, and obtained by the
   oxidation of gallic acid.