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Definition of: spongioblast
(spon′jē·ə·blast′) noun Biol.
1. An epithelial cell of the embryonic neural tube which becomes transformed into a cell of the tissue lining the central cavities of the brain and spinal cord.
2. A spongoblast. [<Gk. spongia, var. of spongos a sponge + -BLAST]
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