Neurad Neu"rad adverb [ Greek ... nerve + Latin
ad to.]
(Anat.) Toward the neural side; -- opposed to hæmad .
Neural Neu"ral adjective [ Greek ... nerve.]
(Anat. & Zoology) 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 . Confer 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.
Neuralgia Neu·ral"gi·a noun [ New Latin , from Greek ... nerve + ... pain. See
nerve .]
(Medicine) 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.
Neuralgic Neu·ral"gic adjective Of or pertaining to, or having the character of, neuralgia; as, a neuralgic headache.
Neuralgy Neu·ral"gy noun Neuralgia.
Neurapophysial Neu·rap`o·phys"i·al adjective (Anat.) Of or pertaining to a neurapophysis.
Neurapophysis Neu`ra·poph"y·sis noun ;
plural Neurapophyses . [ New Latin 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.
Neurasthenia Neu·ras`the·ni"a noun [ New Latin , from Greek ... nerve + ... weakness.]
(Medicine) A condition of nervous debility supposed to be dependent upon impairment in the functions of the spinal cord.
Neuration Neu·ra"tion noun (Biol.) The arrangement or distribution of nerves, as in the leaves of a plant or the wings of an insect; nervation.
Neuraxis Neu·rax"is noun [
Neuro- +
axis .]
(Anat.) See Axis cylinder , under Axis .
Neurenteric Neu`ren·ter"ic adjective [
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 .
Neuridin Neu"ri·din noun [ From
Neurine .]
(Physiol. Chem.) a nontoxic base, C 5 H 14 N 2 , found in the putrescent matters of flesh, fish, decaying cheese, etc.
Neurilemma Neu`ri·lem"ma noun [ New Latin , from Greek ... nerve + ... peel, skin.]
(Anat.) (a) The delicate outer sheath of a nerve fiber; the primitive sheath. (b) The perineurium.
Neurility Neu·ril"i·ty noun [ Greek ... nerve.]
(Physiol.) The special properties and functions of the nerves; that capacity for transmitting a stimulus which belongs to nerves. G. H. Lewes.
Neurine Neu"rine noun [ Greek ... 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 .]
Neurism Neu"rism noun [ Greek ... nerve.]
(Biol.) Nerve force. See Vital force , under Vital .
Neuritis Neu·ri"tis noun [ New Latin , from Greek ... nerve +
-itis .]
(Medicine) Inflammation of a nerve.
Neuro- Neu"ro- [ Greek ney^ron nerve.] (Anat.) A combining denoting a nerve , of or pertaining to a nerve or the nervous system .
Neuro-central Neu`ro-cen"tral adjective [
Neuro- +
central .]
(Anat.) Between the neural arch and the centrum of a vertebra; as, the neurocentral suture. Huxley.
Neuro-epidermal Neu`ro-ep`i·der"mal adjective [
Neuro- +
epidermal .]
(Anat.) Pertaining to, or giving rise to, the central nervous system and epidermis; as, the neuroepidermal , or epiblastic, layer of the blastoderm.
Neurocœle Neu"ro·cœle noun [
Neuro- + Greek
koi^los a hollow.]
(Anat.) The central canal and ventricles of the spinal cord and brain; the myelencephalic cavity.
Neurochord Neu"ro·chord noun ,
Neu`ro*chor"dal adjective (Zoology) See Neurocord .
Neurocity Neu·roc"i·ty noun (Physiol.) Nerve force.
Neurocord Neu"ro·cord noun [
Neuro- +
cord .]
(Zoology) A cordlike organ composed of elastic fibers situated above the ventral nervous cord of annelids, like the earthworm. --
Neu`ro*cor"dal adjective
Neuroglia Neu·rog"li·a noun [ New Latin , from Greek
ney^ron ligament + ... glue.]
(Anat.) The delicate connective tissue framework which supports the nervous matter and blood vessels of the brain and spinal cord.
Neurography Neu·rog"ra·phy noun [
Neuro- +
-graphy .]
(Anat.) A description of the nerves. Dunglison.
Neurokeratin Neu`ro·ker"a·tin noun [
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.
Neurological Neu`ro·log"ic·al adjective Of or pertaining to neurology.
Neurologist Neu·rol"o·gist noun One who is versed in neurology; also, one skilled in the treatment of nervous diseases.
Neurology Neu·rol"o·gy noun [
Neuro- +
-logy .]
The branch of science which treats of the nervous system.
Neuroma Neu·ro"ma noun [ New Latin See
Neuro- , and
-oma .]
(Medicine) A tumor developed on, or connected with, a nerve, esp. one consisting of new-formed nerve fibers.
Neuromere Neu"ro·mere noun [
Neuro- +
-mere .]
(Anat.) A metameric segment of the cerebro-spinal nervous system.
Neuromuscular Neu`ro·mus"cu·lar adjective [
Neuro- +
muscular .]
(Physiol.) Nervomuscular.
Neuron Neu"ron noun ;
plural Neura . [ New Latin , from Greek
ney^ron nerve.]
(Anat.) The brain and spinal cord; the cerebro- spinal axis; myelencephalon. B. G. Wilder.
Neuropathic Neu`ro·path"ic adjective Of or pertaining to neuropathy; of the nature of, or suffering from, nervous disease.
Neuropathy Neu·rop"a·thy noun [
Neuro- + Greek ..., ..., to suffer.]
(Medicine) An affection of the nervous system or of a nerve.
Neuropod Neu"ro·pod noun [
Neuro- +
-pod .]
(Zoology) A neuropodous animal. G. Rolleston.
Neuropodium Neu`ro·po"di·um noun [ New Latin , from Greek ... a nerve + ..., dim. of ..., ..., the foot.]
(Zoology) The ventral lobe or branch of a parapodium.
Neuropodous Neu·rop"o·dous adjective [
Neuro- +
-pod +
-ous .]
(Zoology) Having the limbs on, or directed toward, the neural side, as in most invertebrates; -- opposed to hæmapodous . G. Rolleston.
Neuropore Neu"ro·pore noun [
Neuro- +
pore .]
(Anat.) An opening at either end of the embryonic neural canal.
Neuropter Neu·rop"ter (nu*rŏp"tẽr)
noun (Zoology) One of the Neuroptera.
Neuroptera Neu·rop"te·ra (-te*rȧ)
noun plural [ New Latin , from Greek
ney^ron nerve +
ptero`n a wing, from
pte`sqai to fly.]
(Zoology) 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.
Neuropteral Neu·rop"ter·al (nu*rŏp"tẽr*
a l)
adjective (Zoology) Of or pertaining to the Neuroptera.
Neuropteran Neu·rop"ter·an (-
a n)
noun (Zoology) A neuropter.
Neuropteris Neu·rop"te·ris noun [ New Latin , from Greek ... 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.
Neuropterous Neu·rop"ter·ous adjective (Zoology) Neuropteral.
Neurosensiferous Neu`ro·sen·sif"er·ous adjective [
neuro- +
sensiferous .]
(Zoology) Pertaining to, or forming, both nerves and sense organs.
Neurosis Neu·ro"sis noun ;
plural Neuroses . [ New Latin , from Greek ... nerve.]
(Medicine) A functional nervous affection or disease, that is, a disease of the nerves without any appreciable change of nerve structure.
Neuroskeletal Neu`ro·skel"e·tal adjective Of or pertaining to the neuroskeleton. [ R.]
Owen.
Neuroskeleton Neu`ro·skel"e·ton noun [
Neuro- +
skeleton .]
(Anat.) The deep-seated parts of the vertebrate skeleton which are in relation with the nervous axis and locomotion. Owen.
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