noun🔗ShareA univalent hydrocarbon radical (C6H5) formally derived from benzene by the removal of a hydrogen atom, and the basis of an immense number of aromatic derivatives."A common example of a molecule containing a phenyl group is paracetamol (acetaminophen), a widely used pain reliever. "compoundchemistrysubstancetechnicalChat with AIVocabulary GamePractice Reading