CUSCONIDIN 



346 



CYANOGEN 



Cusconidin {kus-kon' '-id-in) [cusco]. An alkaloid 

 found in Cinchonas. 



Cusconin [kits' '-ko-nin) [cusco], C 23 H 26 N 2 4 . A crys- 

 talline alkaloid found in Cinchona bark. 



Cushing's Operation. See Operations, Table of. 



Cushion [kush'-un) [ME., cuschone, a cushion]. A 

 soft body used as a pillow, for the purpose of reclin- 

 ing or sitting. 



Cusp {kusp) [cuspis, a point]. The pointed crown of a 

 tooth. 



Cusparia Bark {kus-pa' '-re-ah bark). See Angustura. 



Cuspid Teeth {kus'-pid). The four teeth that have 

 conical crowns. They are situated, one on each side, 

 in each jaw, between the lateral incisor and first 

 bicuspid. 



Cuspidate {kits' -pid-at) [cuspis, a point]. In biology, 

 tipped with a sharp, rigid point. 



Cuspidatus {kus-pid-a' -tus) \_cuspis, a point: //., Cus- 

 pidati]. A cuspid tooth. 



Cuspidor {kits' '-pid-or) [Pg. , cuspidor, a spittoon]. A 

 spittoon ; a vessel for receiving the ejecta from the 

 mouth. C, Sanitary, a small pasteboard or wooden 

 cup with a cover supported in a rim of metal. These 

 cuspidors should contain some water or disinfecting 

 solution, and at the end of the day should be thrown 

 into the fire. They are used to prevent the dissem- 

 ination of the germs of tuberculosis. 



Cusso {km' -so). See Bray era and Kooso. 



Cut {kid) [ME., cutten, to cut]. To incise, as with a 

 knife. To castrate. An incision. In biology, a cleft. 

 C. -velvet. See Velvet. 



Cutaneous {ku-ta' '-ne-us) [cutis, the skin]. Pertaining 

 to the skin. C. Calculus. See Milium. C. Em- 

 physema. See Emphysema. C. Horns. See Cornu 

 cutaneum. C. Respiration, the transpiration of 

 gases through the skin. 



Cutch {kuch) [Anglo.-Ind.]. I. A name given to 

 Catechu, the dried extract from Acacia catechu, cul- 

 tivated in India and Burmah, and containing 45 to 55 

 per cent, of a special variety of tannic acid (catechu- 

 tannic or mimotannic). It is used in leather-manu- 

 factures. 2. The tool, or book of parchment leaves, 

 between which gold is beaten into foil. 



Cuticle {ku'-tik-l) [dim. of cutis, the skin]. The epi- 

 dermis or scarf-skin. See Skin. 



Cuticula {ku-tik'-ii-lah) [dim. of cutis, a skin]. The 

 outer, finely lamellated layer of the wall of hydatid 

 cysts. C. dentis, the cuticle of a tooth; Nasmyth's 

 membrane ; the delicate horny envelop that covers 

 the enamel of young and unworn teeth. 



Cuticular {ku-tik'-u-lar) [cuticula, dim. of cutis, the 

 skin]. Belonging or pertaining to the skin. 



Cuticularization {ku-tik-u-lar-iz-a'-shim) [cuticula, 

 dim. of cutis, the skin]. The formation of a cuticula. 



Cutin {ku'-tin) [cutis, skin]. In biology, cork-sub- 

 stance ; a modification of cellulose (Fremy), also called 

 subcrin. 



Cutipunctor {ku-tc-punk' -tor) [cutis, skin ; functor, 

 puncturer] . An instrument for puncturing the skin. 



Cutis {ku'-tis) [L.]. The derma, or true skin. C. 

 anserina. See Goose Skin. C. pendula. Synonym 

 of Dermatolysis. C. testacea, a variety of seborrhea 

 in which the trunk and extensor surfaces of the ex- 

 tremities are covered with large, thick plates of greasy, 

 inspissated sebum, usually greenish or blackish, from 

 accumulation of dirt upon them. There is no inflam- 

 mation of the subjacent skin. C. unctuosa. Syn- 

 onym of Seborrhea. 



Cutisation {kur-lis-a'-shun) [cutis, skin]. The acquire- 

 ment of the characters of true skin by exposed mucous 

 membrane. 



Cutisector {ku-tis-ek' -tor) [cutis, skin; sector, a. cutter]. 



An instrument for taking small sections of skin from 

 the living subject for microscopic study. 



Cut-off Muscle. A popular designation for the com- 

 pressor urethne muscle. See Muscles, Table of. 



Cutose {ku'-tos) [cutis, skin]. In biology, the substance- 

 forming the thin outer covering of the aerial on:; 

 plants (Fremy). 



Cuttle, Cuttlebone {kut'-l, kut'-l bon). See Sepia. 



Cuvier, Angle of. See Angle. C, Canals of. 

 Canal. C, Ducts of. See Duct. 



Cyanalcohol {si-an-al'-ko-hol) [icvavog, dark-blue; 

 alcohol"]. Cyanhydrin ; a substance obtained by the 

 union of an aldehyd with hydrocyanic acid. 



Cyanaldehyd {si-an-aF -de-hld ) [icvavog , dark-blue ; 

 aldehyd]. A substitution-compound of acetic alde- 

 hyd. 



Cyanalkin {si- an- al' -kin) [icvavog, blue ; alkali~\ . 

 of the products of the action of sodium upon the pure 

 nitrites. The cyanalkins are crystalline and st: 

 alkaline bases, and form salts with one equivalent of 

 the acids. 



Cyanamid {si-an f -am-id) [icvavog, blue; amid], Cis.- 

 NH 2 . A white, crystalline body prepared by the ac- 

 tion of ammonia on cyanogen chlorid. 



Cyananilid (si-an-an'-il-id) [icvavog, blue; anilin]. 

 C 7 N 7 H. Phenylcyanamid, a body formed on conduct- 

 ing CNC1, into a cooled ethereal solution of anilin. It 

 is readily soluble in alcohol and ether, but di- 

 with difficulty in water. 



Cyanbenzene {si-an-ben' -zen). See Benzonitrile. 



Cyanein {si-an-e' '-in) [icvavog, dark-blue]. In biology, 

 the blue pigment found by Krukenberg in Rhizostoma, 

 Vrllclla, Aurelia, and Cyanea. It is soluble in water, 

 insoluble in benzene, carbon disulphid, and chloro- 

 form. 



Cyanephidrosis {si-an-efid-ro' -sis) [icvavog, blue : 

 ecjidptocug, sweat]. Blue sweat. 



Cyanetholin {si-an-eth' '-o-lin) [icvavog, blue ; ethyl], A 

 liquid of ethereal odor, insoluble in water, and de- 

 composing when distilled. The cyanetholins are the 

 esters of the cyanic acids. 



Cyanhematin {si-an-hern' '-at-in) [icvavog, blue ; alfia, 

 blood]. A substance produced by adding a solution 

 of cyanid of potassium to a solution of blood, ami 

 heating gently for some time. 



Cyanhydrin {si-an-hi'-drin). See Cyanalcohol. 



Cyanhydrosis {si-an-hid-ro' '-sis). See Cyanephi 



Cyanic {si-an f -ik) [icvavog, blue]. Blue or bluish. C. 

 Acid. See Acid, Cyanic. 



Cyanid {si'-an-id) [icvavog, blue]. Any compound 

 of cyanogen with a metal or a radical. Most of the 

 cyanids are actively poisonous. 



Cyanidrosis {si-an-id-ro' -sis). Same as Cya/ic 

 sis. 



Cyanin {si f -an-in) [icvavog, dark-blue], 1. 1 

 ogy, the blue pigment of certain flowers, as th< 

 flower, violet, iris, etc. 2. C W H 35 N 2 I. A blued) 

 formerly prepared by heating quinolin amy] 

 with potassium hydroxid. Same as Qttinolin-ibie. 

 See Pigments, Conspectus of. C.-blue. See 

 Conspectus of. 



Cyanochroia {si-an-o-kroi' '-ah) [icvavog, blue; 

 color]. Cyanosis. 



Cyanoderma {si-an-o-der' -mah) [icvavog, blue; 

 skin]. Cyanosis. 



Cyanodermia {si-an-o-der' -me-ah). See Cy, 



Cyanogen {si-an'-o-jen) [tc'vavog, blue; 



produce], 'A radical molecule having the structuri 

 CN, an acid-compound of carbon and nitrogen, 

 ing as a colorless, combustible gas, exceedingly pott 

 onous. With hydrogen it forms hydrocyan 

 prussic acid ; with metals, the cyanids ; with <>\-. 



