Neurasthenia
(||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.
Neuration
(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.
Neuraxis
(Neu*rax"is) n. [Neuro- + axis.] (Anat.) See Axis cylinder, under Axis.
Neurenteric
(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.
Neuridin
(Neu"ri*din) n. [From Neurine.] (Physiol. Chem.) a nontoxic base, C5H14N2, found in the
putrescent matters of flesh, fish, decaying cheese, etc.
Neurilemma
(||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.
Neurility
(Neu*ril"i*ty) n. (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) 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.]
Neurism
(Neu"rism) n. (Biol.) Nerve force. See Vital force, under Vital.
Neuritis
(||Neu*ri"tis) n. [NL., fr. Gr. nerve + -itis.] (Med.) Inflammation of a nerve.
Neuro-
(Neu"ro-) 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) a. [Neuro- + central.] (Anat.) Between the neural arch and the centrum
of a vertebra; as, the neurocentral suture. Huxley.
Neurochord
(Neu"ro*chord) n., Neurochordal
(Neu`ro*chor"dal) a. (Zoöl.) See Neurocord.
