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medulloblastoma

med·ul·lo·blas·to·ma [ mə dùllō bla stṓmə ] (plural med·ul·lo·blas·to·mas or med·ul·lo·blas·to·ma·ta [ mə dùllō bla stṓmətə ])


noun 
Definition:
 
malignant tumor of brain: a rapidly growing malignant tumor of the central nervous system arising in the brain, especially in children

[Early 20th century. <medulla + blasto-]
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