uropygium Syllabification: (u·ro·pyg·i·um)Pronunciation: /ˌyo͝orəˈpijēəm/Definition of uropygium noun Zoology the rump of a bird, supporting the tail feathers. Derivatives uropygial adjective Origin: late 18th century: via medieval Latin from Greek ouropugionuropygium in other Oxford dictionaries Definition of uropygium in the British & World English dictionary
