Search Result for "spongioblast": 
Wordnet 3.0

NOUN (1)

1. any of various columnar epithelial cells in the central nervous system that develop into neuroglia; 



WordNet (r) 3.0 (2006):

spongioblast
    n 1: any of various columnar epithelial cells in the central
         nervous system that develop into neuroglia