Definition of rhabdomyosarcoma in US English:


nounPlural rhabdomyosarcomas, Plural rhabdomyosarcomata

  • A rare malignant tumor involving striated muscle tissue.

    • ‘David was diagnosed in May 2003 with a grapefruit-sized malignant brain tumour called a rhabdomyosarcoma, which was causing blindness and headaches.’
    • ‘Pleomorphic rhabdomyosarcomas have more uniform, deeply eosinophilic cytoplasm and display cell-to-cell molding and cross-striations by light microscopy.’
    • ‘Intracranial rhabdomyosarcomas are rare neoplasms, and those thought to be primary meningeal tumors are even more rare.’
    • ‘One half of these malignancies are rhabdomyosarcomas originating in striated muscle.’
    • ‘Equally unclear is the histogenesis of intracranial sarcomas and particularly rhabdomyosarcomas.’


Late 19th century: from Greek rhabdos ‘rod’ + myo- + sarcoma.