DISGREGATIOX 



225 



DIVERTICULUM 



Disgregation (dis-greg-a / -shun) [disgregare, to sepa- 

 rate]. Dispersion ; separation, as of molecules or 

 ceils. 

 Disinfectin [dis-in-fekf-tin). A brown liquid obtained 

 from treating 5 parts of the residue of naphtha-distil- 

 lation with 1 part of concentrated sulfuric acid and the 

 resulting product with 5 parts of \ofc soda solution. 

 Diluted it is used as a disinfectant. 

 Disintoxication {dis-in-tolcs-ik-a' -shun). See Detoxi- 

 fication. 

 Dislocation. (See Illus. Diet.) Syn., Paracinesis ; 

 Olisthesis ; Exo thesis; Delocatio ; Diacincma ; Lux- 

 ation : Lygismus. See Signs, Calla-way ' s, Dugai , 

 Hamilton's. D., Divergent, separate dislocation 

 of the ulna and radius. D., Double, displacement 

 at the same time of corresponding bones on both 

 sides of the body. D., Habitual, one that jecurs re- 

 peatedly from a relaxed condition of the ligaments or 

 from incomplete repair of the articular capsule. D., 

 Monteggia's, the dislocation of the hip-joint in 

 which the head of the femur is near the anterior su- 

 perior spine of the ilium, the limb being rotated out- 

 ward. D., Nelaton's, upward dislocation of the 

 ankle, the astragalus being wedged in between the 

 tibia and fibula. D., Pathologic, one due to a dis- 

 eased joint or paralysis of the controlling muscles. 

 D., Relapsing. See £>., Habitual. D., Smith's 

 (of the foot), dislocation upward and backward of all 

 the metatarsal bones, together with the internal cunei- 

 form. D., Subclavicular, one of the head of the 

 humerus beneath the pectoralis major below the clavi- 

 cle. D., Subglenoid, one of the humerus directly 

 below the glenoid fossa. D., Subpubic, dislocation 

 of the hip-joint below the pubes. D., Subspinous, 

 one in which the head of the humerus is held in the 

 infraspinous fossa. D., Thyroid, displacement of the 

 head of the femur into the thyroid foramen. 

 Dislysin (diY-lis-in). See Dyslysin (Illus. Diet.). 

 Disodic di-sof-dik) [dis, two ; sodiuni]. Having two 



atoms of sodium in each molecule. 

 Disodic Jis-od'-ik) [die, twice ; 066c, a way]. Fur- 

 nished with or relating to two openings. 

 Disoma. Disomus, (di-so^-mah, -nius) [die, twice ; 

 auua, body ; pi., disonuUa, disomij. A monster hav- 

 ing two trunks. 

 Disoxidation (dis-oks-id-a'-shun). See Deoxidation. 

 Disoxygenation {dis-oks-e-jen-a 1 '-shun). See Deoxygen- 



ation. 

 Dispar dis* -par) [L.]. Unequal. 



Disparity (dispar' -e-te) [dispar, unequal]. Difference, 

 inequality. D., Crossed, a condition of binocular 

 relief whereby in superimposed similar figures having 

 eir points of sharpest vision coinciding, a certain 

 er point in the left field appears to be to the right, 

 d the same point in the right field to the left of the 

 nt of sharpest vision. D., Uncrossed, a similar 

 ndition of binocular relief, but in which a point of 

 he left is seen to the left of a similar point in the 

 ' ht field, 

 ispermin (di-spurntf -in). See Piperazin (Illus. 

 Diet.). 



Dispermy (di-spurnr" -e) [die, twice ; a-ipua, a seed]. 

 The entrance of two spermatozoa into the egg-cell, 

 placement. (See Illus. Diet.) 2. Percolation. 

 Backward (of the arm), D., Dorsal (of the 

 ), a backward displacement across the neck or oc- 

 pital region, of one of the arms of the fetus, causing 

 struction to delivery. D., Fishhook, a displace- 

 ent of the stomach in which the pyloric orifice 

 s directly upward and the duodenum extends up- 

 ard and to the right, connecting with the pylorus at 

 angle, which produces a constricting hook. 

 '5 



Dissimilation (dis-sim-il-a' '-shun). See Catabolism 



(Illus. Diet). 

 Distillation. (See Illus. Diet.) D., Dry, distillation 



of solids without the addition of liquids, conducted 



within a closed vessel in order to hinder combustion. 

 Distobuccal {dis-to-buiZ-al) [distare, to separate; 



bucca, the cheek]. Relating to the distal and buccal 



walls of the bicuspid and molar teeth. 

 Distolabial (dis-to-la* -be-al) [distare, to separate ; 



labium, lip]. Relating to the portions of the anterior 



teeth between their distal and labial walls. 

 Distolingual (dis-to-litr'-gwal) [distare, to separate; 



lingua, tongue]. Relating to the portions of teeth 



between their distal and lingual walls. 

 Distomatosis {dis-to-mal-o' -sis). See Distomia. 

 Distomia (di-sto f -me-ah) [die, twice ; aroua, mouth]. 



Congenital duplication of the mouth. 

 Distraction (iiis-trak / -shun) [distrahere, to draw 



apart]. A method of treating certain joint-diseases 



and bone fractures by extension and counterextension. 

 Disvolution (dis-vo-lu / -shun) [dis, apart; voh'tre, to 



roll down]. Degeneracy ; devolution ; extreme 



catabolism. 

 Ditain (dif-ah-in). C^H^XjC^ (Hesse). An alkaloid 



from dita bark forming bitter glassy prisms soluble in 



water, alcohol, ether, or chloroform ; melting at 206 



C. It is used hypodermically in tetanus. Dose, y'^ 

 gr. (0.005 gm. ) I or 2 times per day or until effectual. 

 Syn., Echitamin. 



Ditamin (dil'-am-in). C^H^NO^. An alkaloid found 

 by Hesse in dita bark. 



Dithan (dith'-an). See Trional (Illus. Diet.). 



Dithienyl (di-thi'-en-il). C g H 6 Sj. An oxidation- 

 product of thiophene with sulfuric acid forming 

 large, glossy laminas ; soluble in alcohol, ether, and 

 glacial acetic acid; melting at 83 C; boiling at 

 266 C. 



Dithion (dith'-e-ori). A mixture of the two sodium 

 dithiosalicylates occurring as a gray powder. It is 

 used as an antiseptic wash ($% to lo<£) and dusting- 

 powder in gonorrhea and in foot and mouth disease. 



Dithionaphtol (dith-e-o-naf'-toi). C, H 6 Sj. A re- 

 duction-product of a-naphthalene disulfochlorid oc- 

 curring as a white crystalline powder, soluble in hot 

 alcohol ; melts at 180 C; boils at 2lo° C. 



Dithymoldiiodid, Dithymoliodid {di-thi-mol-di-i f -o- 

 did, di-thi-mol-i'-o-did). See Aristol ( Illus. Diet.). 



Diurism [di'-ur-izm). See Diuresis (Illus. Diet.). 



Diurnation tdi-ur-ua'-shun). The diurnal sleep of 

 the bat and other nocturnal animals. 



Divalerene (di-val'-ur-en). See Dipentene (Illus. 

 Diet). 



Diverticular [di-vur-tik f -u-lar) [divertere, to turn]. 

 Relating to or arising from a diverticulum. 



Diverticulitis [di-zur-tik-u-lr'-tis). Inflammation of a 

 diverticulum (of the urethra). 



Diverticulum. (See Illus. Diet.) Svn., Deierticu- 

 lum. D., Cecal. See Z>., MeckePs (Illus. Diet.). 



D. of the Duodenum, the ampulla of Vater. D., 

 Esophageal. See Pharyngocele (Illus. Diet.). D., 

 False, a sacciform dilation due to disease or injury. 

 D., Heister's, the sinus of the jugular vein D. 

 ilei, D. of the Ileum. See D., MeckePs (Illus. 

 Diet.). D., Lateral (of the fourth ventricle). See 

 Recess, Lateral (Illus. Diet.). D., Nuck's. See 

 Canal, Nuck' s (Illus. Diet.). D., Pertik's, a diver- 

 ticulum of the nasopharyngeal space which may occur 

 close to Rosenmueller's fossa and show itself as an 

 enlargement of the latter. D., Pituitary. See under 

 Pituitary (Illus. Diet.). D., Pulsion, D., Traction, 

 a false diverticulum produced by traction on the out- 

 side of a hollow organ. D., Vater's. See Ampulla y 



