polyphenol http://purl.bioontology.org/ontology/SNOMEDCT/416908008 http://purl.obolibrary.org/obo/CHEBI_26195 http://purl.obolibrary.org/obo/NCIT_C28203 https://en.wikipedia.org/wiki/Category:Polyphenols https://en.wikipedia.org/wiki/Polyphenol Members of the class of phenols that contain 2 or more benzene rings each of which is substituted by at least one hydroxy group. polyphenols phenol