medulloblast
noun
me·dul·lo·blast
| \ mə-ˈdəl-ə-ˌblast
, ˈmej-ə-lə-
\
, ˈmej-ə-lə-
\
Medical Definition of medulloblast
: a primitive undifferentiated nerve cell of the neural tube that is capable of developing into either a neuroblast or a spongioblast and that is found in medulloblastomas