Net"-veined` (?), a. Having veins, or nerves, reticulated or netted;
as, a net-veined wing or leaf.
Net"work` (?), n. 1. A fabric of threads, cords, or wires crossing each
other at certain intervals, and knotted or secured at the crossings,
thus leaving spaces or meshes between them.
2. Any system of lines or channels interlacing or crossing like the
fabric of a net; as, a network of veins; a network of railroads.
Neu"rad (?), adv. [Gr. &?; nerve + L. ad to.] (Anat.) Toward the neural
side; -- opposed to hæmad.
Neu"ral (?), a. [Gr. &?; nerve.] (Anat. & Zoöl.) relating to the nerves
or nervous system; taining to, situated in the region of, or on the
side with, the neural, or cerebro-spinal, axis; -- opposed to hemal. As
applied to vertebrates, neural is the same as dorsal; as applied to
invertebrates it is usually the same as ventral. Cf. Hemal.
Neural arch (Anat.), the cartilaginous or bony arch on the dorsal side
of the centrum of the vertebra in a segment of the spinal skeleton,
usually inclosing a segment of the spinal cord.
Neu*ral"gi*a (?), n. [NL., from Gr. &?; nerve + &?; pain. See nerve.]
(Med.) A disease, the chief symptom of which is a very acute pain,
exacerbating or intermitting, which follows the course of a nervous
branch, extends to its ramifications, and seems therefore to be seated
in the nerve. It seems to be independent of any structural lesion.
Dunglison.
Neu*ral"gic (?), a. Of or pertaining to, or having the character of,
neuralgia; as, a neuralgic headache.
Neu*ral"gy (?), n. Neuralgia.
Neu*rap`o*phys"i*al (?), a. (Anat.) Of or pertaining to a
neurapophysis.
||Neu`ra*poph"y*sis (?), n.; pl. Neurapophyses (#). [NL. See Neuro-,
||and Apophysis.] (Anat.) (a) One of the two lateral processes or
||elements which form the neural arch. (b) The dorsal process of the
||neural arch; neural spine; spinous process.
||Neu*ras`the*ni"a (?), n. [NL., fr. Gr. &?; nerve + &?; weakness.]
||(Med.) A condition of nervous debility supposed to be dependent upon
||impairment in the functions of the spinal cord.
Neu*ra"tion (?), n. (Biol.) The arrangement or distribution of nerves,
as in the leaves of a plant or the wings of an insect; nervation.
Neu*rax"is (?), n. [Neuro- + axis.] (Anat.) See Axis cylinder, under
Axis.
Neu`ren*ter"ic (?), a. [Neuro- + enteric.] (Anat.) Of or pertaining to
both the neuron and the enteron; as, the neurenteric canal, which, in
embroys of many vertebrates, connects the medullary tube and the
primitive intestine. See Illust. of Ectoderm.
Neu"ri*din (?), n. [From Neurine.] (Physiol. Chem.) a nontoxic base,
C5H14N2, found in the putrescent matters of flesh, fish, decaying
cheese, etc.
||Neu`ri*lem"ma (?), n. [NL., from Gr. &?; nerve + &?; peel, skin.]
||(Anat.) (a) The delicate outer sheath of a nerve fiber; the primitive
||sheath. (b) The perineurium.
Neu*ril"i*ty (?), n. [Gr. &?; nerve.] (Physiol.) The special properties
and functions of the nerves; that capacity for transmitting a stimulus
which belongs to nerves. G. H. Lewes.
Neu"rine (? or ?), n. [Gr. &?; a nerve.] (Physiol. Chem.) A poisonous
organic base (a ptomaine) formed in the decomposition of protagon with
boiling baryta water, and in the putrefaction of proteid matter. It was
for a long time considered identical with choline, a crystalline body
originally obtained from bile. Chemically, however, choline is
oxyethyl- trimethyl-ammonium hydroxide, while neurine is
vinyl-trimethyl- ammonium hydroxide. [Written also neurin.]
Neu"rism (?), n. [Gr. &?; nerve.] (Biol.) Nerve force. See Vital force,
under Vital.
||Neu*ri"tis (?), n. [NL., fr. Gr. &?; nerve + -itis.] (Med.)
||Inflammation of a nerve.
Neu"ro- (&?;). [Gr. ney^ron nerve.] (Anat.) A combining denoting a
nerve, of or pertaining to a nerve or the nervous system.
Neu`ro-cen"tral (?), a. [Neuro- + central.] (Anat.) Between the neural
arch and the centrum of a vertebra; as, the neurocentral suture.
Huxley.
Neu"ro*chord (?), n., Neu`ro*chor"dal (&?;), a. (Zoöl.) See Neurocord.
Neu*roc"i*ty (?), n. (Physiol.) Nerve force.
Neu"ro*cœle (?), n. [Neuro- + Gr. koi^los a hollow.] (Anat.) The
central canal and ventricles of the spinal cord and brain; the
myelencephalic cavity.
Neu"ro*cord (?), n. [Neuro- + cord.] (Zoöl.) A cordlike organ composed
of elastic fibers situated above the ventral nervous cord of annelids,
like the earthworm. -- Neu`ro*cor"dal (#), a.
Neu`ro-ep`i*der"mal (?), a. [Neuro- + epidermal.] (Anat.) Pertaining
to, or giving rise to, the central nervous system and epidermis; as,
the neuroepidermal, or epiblastic, layer of the blastoderm.
||Neu*rog"li*a (?), n. [NL., fr. Gr. ney^ron ligament + &?; glue.]
||(Anat.) The delicate connective tissue framework which supports the
||nervous matter and blood vessels of the brain and spinal cord.
Neu*rog"ra*phy (?), n. [Neuro- + -graphy.] (Anat.) A description of the
nerves. Dunglison.
Neu`ro*ker"a*tin (?), n. [Neuro- + keratin.] (Physiol. Chem.) A
substance, resembling keratin, present in nerve tissue, as in the
sheath of the axis cylinder of medullated nerve fibers. Like keratin it
resists the action of most chemical agents, and by decomposition with
sulphuric acid yields leucin and tyrosin.
Neu`ro*log"ic*al (?), a. Of or pertaining to neurology.
Neu*rol"o*gist (?), n. One who is versed in neurology; also, one
skilled in the treatment of nervous diseases.
Neu*rol"o*gy (?), n. [Neuro- + -logy.] The branch of science which
treats of the nervous system.
||Neu*ro"ma (?), n. [NL. See Neuro- , and -oma.] (Med.) A tumor
||developed on, or connected with, a nerve, esp. one consisting of
||new-formed nerve fibers.
Neu"ro*mere (?), n. [Neuro- + -mere.] (Anat.) A metameric segment of
the cerebro-spinal nervous system.
Neu`ro*mus"cu*lar (?), a. [Neuro- + muscular.] (Physiol.)
Nervomuscular.
||Neu"ron (?), n.; pl. Neura (#). [NL., from Gr. ney^ron nerve.]
||(Anat.) The brain and spinal cord; the cerebro- spinal axis;
||myelencephalon. B. G. Wilder.
Neu`ro*path"ic (?), a. Of or pertaining to neuropathy; of the nature
of, or suffering from, nervous disease.
Neu*rop"a*thy (?), n. [Neuro- + Gr. &?;, &?;, to suffer.] (Med.) An
affection of the nervous system or of a nerve.
Neu"ro*pod (?), n. [Neuro- + -pod.] (Zoöl.) A neuropodous animal. G.
Rolleston.
||Neu`ro*po"di*um (?), n. [NL., from Gr. &?; a nerve + &?;, dim. of
||&?;, &?;, the foot.] (Zoöl.) The ventral lobe or branch of a
||parapodium.
Neu*rop"o*dous (?), a. [Neuro- + -pod + -ous.] (Zoöl.) Having the limbs
on, or directed toward, the neural side, as in most invertebrates; --
opposed to hæmapodous. G. Rolleston.
Neu"ro*pore (?), n. [Neuro- + pore.] (Anat.) An opening at either end
of the embryonic neural canal.
Neu*rop"ter (n*rp"tr), n. (Zoöl.) One of the Neuroptera.
||Neu*rop"te*ra (-t*r), n. pl. [NL., fr. Gr. ney^ron nerve + ptero`n a
||wing, fr. pte`sqai to fly.] (Zoöl.) An order of hexapod insects
||having two pairs of large, membranous, net-veined wings. The mouth
||organs are adapted for chewing. They feed upon other insects, and
||undergo a complete metamorphosis. The ant-lion, hellgamite, and
||lacewing fly are examples. Formerly, the name was given to a much
||more extensive group, including the true Neuroptera and the
||Pseudoneuroptera.
<! p. 973 !>
Neu*rop"ter*al (n*rp"tr*al), a. (Zoöl.) Of or pertaining to the
Neuroptera.
Neu*rop"ter*an (-an), n. (Zoöl.) A neuropter.
||Neu*rop"te*ris (?), n. [NL., fr. Gr. &?; a nerve + &?; a kind of
||fern.] (Paleon.) An extensive genus of fossil ferns, of which species
||have been found from the Devonian to the Triassic formation.
Neu*rop"ter*ous (?), a. (Zoöl.) Neuropteral.
Neu`ro*sen*sif"er*ous (?), a. [neuro- + sensiferous.] (Zoöl.)
Pertaining to, or forming, both nerves and sense organs.
||Neu*ro"sis (?), n.; pl. Neuroses (#). [NL., fr. Gr. &?; nerve.]
||(Med.) A functional nervous affection or disease, that is, a disease
||of the nerves without any appreciable change of nerve structure.
Neu`ro*skel"e*tal (?), a. Of or pertaining to the neuroskeleton. [R.]
Owen.
Neu`ro*skel"e*ton (?), n. [Neuro- + skeleton.] (Anat.) The deep-seated
parts of the vertebrate skeleton which are in relation with the nervous
axis and locomotion. Owen.
Neu"ro*spast (?), n. [L. neurospaston, Gr. &?;, fr. &?; drawn by
strings.] A puppet. [R.] Dr. H. More.
Neu*rot"ic (?), a. [Gr. &?; nerve.] 1. Of or pertaining to the nerves;
seated in the nerves; nervous; as, a neurotic disease.