Diadema

== Translingual == === Etymology === (This etymology is missing or incomplete. Please add to it, or discuss it at the Etymology scriptorium.) === Proper noun === Diadema f A taxonomic genus within the family Diademaceae – certain fungi. A taxonomic genus within the family Diadematidae – certain long-spined sea urchins. === References === fungus Diadema (fungus) on Wikipedia.Wikipedia Diadema (Diadematidae) on Wikispecies.Wikispecies sea urchin Diadema (echinoderm) on Wikipedia.Wikipedia Diadema (Diademaceae) on Wikispecies.Wikispecies Category:Diadema (Echinodermata) on Wikimedia Commons.Wikimedia Commons == Italian == === Etymology === (This etymology is missing or incomplete. Please add to it, or discuss it at the Etymology scriptorium.) === Proper noun === Diadema m or f by sense a surname === Further reading === Stefano Ravara (2015–2026), Mappa dei Cognomi‎[1] == Portuguese == === Pronunciation === === Proper noun === Diadema ? a municipality of São Paulo, Brazil