The fibrocellular meshwork in the spinal cord of the embryo, from which the neuroglia is developed. ... Origin: myelo-+ G. Spongos, sponge ... (05 Mar 2000) ... 
(mi″ә-lo-spon´ge-әm) a network developing into the neuroglia.
Type: Term Pronunciation: mī′ĕ-lō-spŭn′jē-ŭm Definitions: 1. The fibrocellular meshwork in the spinal cord of the embryo, from which the neuroglia is developed.
myelospongium 1. The fibrocellular meshwork (network) in the spinal cord of the embryo, from which the neuroglia (cells that surround neurons) is developed. 2. A network in the embryonic central nervous system derived from the spongioblasts and giving rise to the neuroglia.