NEURATION
Neu*ra"tion, n. (Biol.)

Defn: 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. Etym: [Neuro- + axis.] (Anat.)

Defn: See Axis cylinder, under Axis.

NEURENTERIC
Neu`ren*ter"ic, a. Etym: [Neuro- + enteric.] (Anat.)

Defn: 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. Etym: [From Neurine.] (Physiol. Chem.)

Defn: a nontoxic base, C5H14N2, found in the putrescent matters of flesh, fish, decaying cheese, etc.

NEURILEMMA Neu`ri*lem"ma, n. Etym: [NL., from gr. (Anat.) (a) The delicate outer sheath of a nerve fiber; the primitive sheath. (b) The perineurium.

NEURILITY
Neu*ril"i*ty, n. Etym: [Gr. (Physiol.)