NEUROTOME 



the nerves ; nervous ; also, pertaining to neuroses. In 

 therapeutics, neurotics are such drugs as have a special 

 influence upon the nervous centers and functions. 

 N. Albuminuria, albuminuria due to nervous dis- 

 turbance. N. Atrophy, atrophy dependent upon 

 changes in some part of the nervous system. N. Dys- 

 pepsia. See Dyspepsia. N. Fever, fever following 

 traumatism of the central nervous system. N. Hyper- 

 trophy, hypertrophy resulting from excessive nutrition 

 or other trophic abnormality. 



Neurotome \nu f -ro-tom) [vevpov, nerve ; TOfiij, a cut- 

 ting]. A small knife for the division of a nerve, 

 especially subcutaneously. 



Neurotomy {nu-rof '-o-me) [vevpov, nerve ; re/uveiv, to 

 cut]. The division of a nerve. 



NeuTo-toxicology^w-ro-toks-ik-ol'-o-je) [vevpov, nerve ; 

 Totjwov, poison ; "kdyoq, science]. The toxicology of 

 the nerves ; the science of the nervous disorders of 

 toxic origin. 



Neurotripsy (nu' ' -ro-trip-se) [yevpov, nerve ; Tpifiuv, 

 to rub]. The crushing of a nerve. - 



Neurotroma (nu-ro-tro' -mah) [yevpov, nerve; rpu/ia, 

 wound]. The wound of a nerve. 



Neurotrophic (nu-ro-tro' -fik) [vevpov, nerve; Tpoqrj, 

 nourishment]. Depending on or attained through 

 the trophic influence exercised by the nerves. 



Neurotrophy (uu-rof-ro-fe) [vevpov, nerve ; rpofyi], 

 nourishment]. The nourishment of a nerve. 



Neurotrosis, Neurotrosmus (nu-rot'-ro-sis, nu-ro- 

 troz'-mtis) [yevpov, nerve ; rpuaic, a wounding]. The 

 wounding of a nerve. 



Neuro-varicosis (nu-ro-var-ik-o' -sis) [vevpov, nerve ; 

 varix, varix]. A varicosity on a nerve-fiber, or the 

 formation of one. 



Neurymen (nu-ri'-men). Synonym of Neurilemma. 



Neurymenitis (nu-ri-men-i f -tis). Synonym of Neu- 

 rilemmatitis. 



Neurypnology (nu-rip -nol'-o-je). See Neurohyp- 

 nology. 



Neuter (nu'-ter) [L. ] . Sexually not properly developed ; 

 an organism of neither sex. 



Neutral (nu'-tral) [neuter, neither]. Neither alkaline 

 nor acid; bland and soothing; having no active 

 effect upon a tissue. N. Blue. See Pigments, Con- 

 spectus of. N. Mixture, liquor potassii citratis. See 

 Potassium. N. Oils. See Lubricating Oils. N. 

 Red. See Toluylene-red, and Pigments, Conspectus 

 of. N. Violet. See Pigments, Conspectus of. 



Neutraline (nu f -tral-in) [neuter, neither]. A com- 

 mercial or proprietary name given to a brand of Petrol- 

 atum, q. v. 



Neutralization (nu-tral-iz-a' -shun) [neuter, neither]. 

 That process or operation that precisely counter- 

 balances or cancels the action of an agent. In medi- 

 cine, the process of checking the operation of any 

 agent that produces a morbid effect. In chemistry, 

 a change of reaction to that which is neither alkaline 

 nor acid. 



Neutralize (nu' -tral-lz) [neuter, neither]. To render 

 neutral ; to render inert. 



Neutrophile (nu' -tro-fil)[neuter , neither; 0/Aoc, loving]. 

 Stained readily by neutral dyes ; applied to certain 

 bacteria and tissue-elements, especially leukocytes. N. 

 Leukocytes, small colorless cells in normal human 

 blood, containing several much-contorted nuclei that 

 are readily stained. The protoplasm of these cells 

 usually contains granules colorable by neutral stains, 

 hence their name. See Leukocyte. 



Neuwied-green. Same as Schweinfurih-green. 



Nevoid (ne'-void) [ntzvus, birth-mark; eWoc, like]. 

 Resembling a nevus. N. Elephantiasis, 'sue. Lymph- 

 scrotum. 



870 NEWTON'S COLOR-RINGS 



Nevose (ne'-voz) [ncevus, a birth-mark]. Freckled; 

 having nevi. 



Nevus, Naevus (ne'-vus) [L.: plural Nevi\. A mark 

 or blemish due to the dilatation of the blood-v 

 near the surface of the skin or within its texture. N. 

 araneus. See Acne rosacea. N., Capillary, one that 

 involves the capillaries of the skin. N. cerasus. a 

 slightly elevated vascular nevus resembling somewhat 

 the appearance of a cherry. N., Cutaneous, a nevus of 

 the skin. N. flammeus. See IV. maternus . N. frag- 

 arius, the strawberry mark. N. lipomatodes, a large 

 mole, soft and lax, containing a quantity of fat and loose 

 connective tissue. N. lupus. See Angioma serpig- 

 inosum. N. maternus, Mother's mark; the patch 

 of congenital discoloration of the skin due to a dilated 

 condition of the capillaries. If this is diffuse, very 

 slightly, if at all, raised, red, or purplish-red, and on 

 some part of the face, often involving the whole of 

 one side, it is called N. flammeus, or "port-wine 

 mark.' 1 '' This is a relatively common condition. N. 

 morus, the mulberry nevus ; a vascular nevus some- 

 what elevated and with an irregular surface. N. nati- 

 vus, birth-mark. N. neuroticus, a minor degree of 

 Lchthyosis hystrix. N. papillaris, a minor degree of 

 Lchthyosis hystrix. N. papillomatosus, a mole 

 covered with soft, papillary growths. N. pigmento- 

 sus, pigmentary mole ; ncevus verrucosus; tuzvus 

 sigilum ; ncevus pilosus ; n&vus spilus ; a circum- 

 scribed, congenital pigmentary deposit in the skin, 

 varying in color from a light-fawn to a blackish tint, 

 and often associated with hypertrophy of the hairs as to 

 number, size, and color-elements. It varies in size from 

 a pinhead discoloration to bean-sized or larger flattened 

 and warty elevations, or it may reach the size of a 

 cocoanut or fetal head. N. pilaris, N. pilosus. See 

 N pigmentosus. N. planus, a non-elevated pig- 

 mentary nevus. N. sanguineus. See N vascularis. 

 N. sigilum. Synonym of N. pigmentosus. N., 

 Spider. Synonym of N. araneus. N. spilus. See 

 N. pigmentosus. N. tuberculosus. Synonym of 

 N. verrucosus. N., Varicose. See N. , Venous. 

 N. vascularis, N. vasculosus ; N. sanguineus: 

 a congenital overgrowth of cutaneous vascular tissue 

 forming the so-called nevi. These may be capillary 

 or cutaneous, and venous or subcutaneous. The 

 former vary in size from a mere point up to large 

 areas, standing on a level with the skin or raised 

 more or less above it, of a bright-red color or of a 

 more or less purplish hue. The venous nevus is gen- 

 erally more raised than the capillary ; it is convex. 

 smooth, or lobulated, and of a dark-purple color, 

 compressible, but rapidly filling after the compression 

 has been removed. N. vasculosus. See N. vas- 

 cularis. N. verrucosus. See N. pigmentosus. N., 

 Venous, a raised, convex, and sometimes lobulated 

 form, consisting of thin- walled veins and sinuses bound 

 together by connective tissue. 



New (nu) [ME., newe, new]. Not old ; freshly pro- 

 duced; recent. N. Blue. Same as French 

 See Pigments, Conspectus of . N.-born, a designation 

 applied to the child for a short period after birth. N. 

 Coccin. See Pigments, Conspectus of. N. Fast 

 Violet. Same as Gallocyanin. N. -formation. See 

 Neoplasm. N. Jersey Tea. See Ceanothus. N. Red. 

 Same as Fuchsin. N. Victoria Green. Sai 

 Brilliant Green. N. White. See Pigments, Con 

 spectus of. N. Yellow. Same as Flavaurin. N. 

 Zealand Flax. See Flax. 



Newman's Treatment. See Treatment, Met/.-. 



Newton's Color-rings. The colorings produced when 

 a cover-glass is pressed upon the slide. They are the 

 result of chromatic aberration. N.'s Disc, a circular 



