/ (ˈnjʊərəʊpɪl) /


a dense network of neurons and glia in the central nervous system

Word Origin for neuropil

from neuro- + Greek pilos hair
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Examples from the Web for neuropil

  • Fibres which pass into this 'neuropil' from other parts of the brain connect them with the optic ganglion.

    The Origin of Vertebrates|Walter Holbrook Gaskell
  • The neurone of the second order, which terminates in the 'neuropil' of the second ganglion (ganglion of the optic nerve).

    The Origin of Vertebrates|Walter Holbrook Gaskell

Medicine definitions for neuropil

[ nurə-pĭl′ ]


The complex net of axonal, dendritic, and glial branchings that forms the bulk of the central nervous system gray matter of the brain and in which the nerve cell bodies are embedded.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.