/ˈnjʊərə(ʊ)pʌɪl/, U.S. /ˈn(j)ʊrəˌpaɪl/. neuropiln.
/ˈnjʊərə(ʊ)pɪl/, U.S. /ˈn(j)ʊrəˌpɪl//ˈnjʊərə(ʊ)pʌɪl/, U.S. /ˈn(j)ʊrəˌpaɪl/. Anatomy and Zoology.
1. Tissue consisting of a dense network of neuronal and glial processes, forming a large part of the grey matter of the nervous system; (also) a structure or region composed of such tissue.
ΘΚΠ
the world > life > the body > nervous system > substance of nervous system > [noun] > nerve fibre > band or collection of
file1607
funiculus1824
nerve filament1839
fillet1840
nerve fibril1851
lemniscus1857
nerve cord1864
nerve bundle1865
nerve branch1874
nerve plexus1877
nerve tract1877
neuropilema1891
neuropil1894
fibre tract1904
the world > life > the body > nervous system > nerve > parts of nerves > [noun] > branch
rame1578
surcle1578
ramus1615
sprig1634
twig1683
ramus communicans1798
rootlet1815
radicle1829
nerve twig1865
arm1870
radical1880
neuropilema1891
neuropil1894
1894 Proc. Royal Soc. 55 409 The cell lies in the lateral mass of ganglion cells, and the fibre gives off lateral branches to the neuropile before crossing to the other side.
1899 L. F. Barker Nerv. Syst. xxiii. 271 This investigator..isolated the neuropil of the second antenna of Carcinus—in other words, he removed the ganglion cells of the neurones supplying the antenna, but left their processes and side branches.
1934 Jrnl. Compar. Neurol. 59 95 In some parts of the [amphibian] brain much branched and contorted unmyelinated axons form a dense entanglement which is termed neuropil.
1941 O. A. Johannsen & F. H. Butt Embryol. Insects & Myriapods ii. 21 The neuropile (Punctsubstanz, fibrillar substance, nerve fibers) develops in the ganglia in the older stages.
1964 R. M. Fox & J. W. Fox Introd. Compar. Entomol. vi. 179 A ganglion..has a central mass of medullary tissue (neuropile) consisting of the intermixed axons and dendrons of motor and internuncial neurons and the terminal arborizations of sensory dendrons.
1974 Sci. Amer. Jan. 41/1 In addition to the major branches running through roots and connectives there are many such processes within the neuropil, the region in the center of the ganglion where synaptic connections are made.
1989 Nature 5 Jan. 35/1 The neuropiles of the CNS, where integration of information for the activation of the flexor motor programme takes place.
1995 C. Nielsen Animal Evol. xxxiii. 265 Gastrotrichs... The nervous system..comprises a circumpharyngeal brain with an anterior concentration of perikarya, a median ring of neuropil and a posterior concentration of perikarya.
2. An ultimate branch of a nerve fibre. disused. rare.
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1900 tr. A. Bethe in J. Loeb Compar. Physiol. Brain iii. 45 It was easy to decide this question by separating the ganglion-cells with their axis-cylinder process from the motor neurons without injuring the neuropiles.
1909 Cent. Dict. Suppl. Neuropile, One of the delicate, ultimate branches of a nerve-cell process.
This entry has been updated (OED Third Edition, September 2003; most recently modified version published online March 2022).
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n.1894