glioma

from WordNet (r) 3.0 (2006)

glioma
    n 1: a tumor of the brain consisting of neuroglia

from The Collaborative International Dictionary of English v.0.48

Glioma \Gli*o"ma\, n. [NL., fr. Gr. ? glue + -oma.] (Med.)
   A tumor springing from the neuroglia or connective tissue of
   the brain, spinal cord, or other portions of the nervous
   system.
   [1913 Webster]