A phenol is a benzene ring with an hydroxl (OH) group attached. A  polyphenol is composed of many such phenols strung together.   In terms of everyday life, this descript…ion doesn't mean much. A  number of fruits and vegetables are being studied based on their  polyphenol content, as it's thought that these polyphenols may be  responsible for the beneficial effects of these products.  Pomegranates and grapes (especially in red wine) are known to be  high in polyphenols. Eat your fruits and vegetables. (MORE)