Definition of "neuroblast" [neuroblast]

• An embryonic cell from which a nerve cell develops. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "The differentiation of specific nerve cell types in the thoracic segments results from spatial and temporal control of neuroblast lineages via an interplay of Hox, Pbx/Meis, and temporal genes."
• "In the most anterior segments, which make up the fly brain, neuroblast division continued long enough to make Ap clusters, but nonetheless the clusters didn't form."
• "Ap cluster neurons form at the end of a long series of neuroblast cell divisions and only in the presence of specific molecular signals."