Rhombozoa Syllabification: (Rhom·bo·zoa)Pronunciation: /ˌrämbəˈzōə/ ZoologyDefinition of Rhombozoa a minor phylum of mesozoan worms that are parasites in the kidneys of cephalopod mollusks. Derivatives rhombozoan noun & adjective Origin:modern Latin (plural), from Greek rhombos 'rhombus' + zōia 'animals'Rhombozoa in other Oxford dictionaries Definition of Rhombozoa in the British & World English dictionary