sand tumor sand tube • sandust · · · Info · Definitions · Synonyms · Characters · · sand tumor · · Text Common · · Latin · · Scripts 10 · · Length 3 · · Syllables Definitions · · · (noun) a tumor derived from fibrous tissue of the meninges or choroid plexus or certain other structures associated with the brain; characterized by sandlike particles. Synonyms: psammoma, sand tumor. · · Noun Definition 1 Synonyms · · · psammoma · · Synonym 1 Characters · · space U+0020 a latin small letter a U+0061 d latin small letter d U+0064 m latin small letter m U+006D n latin small letter n U+006E o latin small letter o U+006F r latin small letter r U+0072 s latin small letter s U+0073 t latin small letter t U+0074 u latin small letter u U+0075