DIAXOX 



217 



DICLIDOSTOSIS 



eurysms. D., Arsenical, chronic arsenic-poisoning. 

 D., Arthritic. See D., Uric-acid. D., Asthenic, 

 general debility ; a constitutionally low state of vitality. 

 D., Bilious, the morbid condition that follows chronic 

 disturbance of the portal circulation and imperfect 

 elimination of bile. D., Calculous, a constitutional 

 tendency to the formation of calculi. D., Cancerous. 

 See Cachexia, Cancerous. D., Catarrhal, a tendency 

 to excessive secretion of mucus. D., Climatic, a 

 morbid state of body dependent upon local physical 

 conditions, as elevation, soil, water, humidity, etc. 

 D., Congestive, a constitutional tendency to vaso- 

 motor disturbances and local congestions. D., Gouty, 

 D., Lithic. See D., Uric acid. D., Melanotic. 

 See Melanosis (Illus. Diet. ). D., Mercurial. See 

 Cachexia mercurialis. D., Nonspecific, a hereditary 

 predisposition to weakness or disease not attributable 

 to syphilis or other specific family taint. Cf. D., 

 Virulent Specific. D., Osseous, D.. Ossific, a ten- 

 dency to abnormal development of bony tissues. D., 

 Osteophytic, a constitutional tendency to the forma- 

 tion of abnormal ankyloses. D., Psychopathic, a 

 hereditary predisposition to mental derangement. D., 

 Purulent, a constitutional condition affording little or 

 no resistance to the growth of pyogenic microorganisms; 

 a tendency to the formation of abscesses ; pyemia. D., 

 Rhachitic. See Rhachitis (Illus. Diet.). D., 

 Rheumatic. See D., Uric-acid. D., Scorbutic. 

 See Scorbutus. D., Scrofulous, a hereditary predis- 

 position to scrofulous affections. Syn., Strumous di- 

 athesis. D., Serous, of Pregnant Women, a ten- 

 dency, seen in pregnancy, to serous effusions or hy- 

 drorrhea. D., Specific. See D., Virulent Specific. 

 D., Sthenic, a hereditary tendency to exaltation of 

 vital activity in one or many respects ; overgrowth, 

 overexcitability. Syn., Plethoric diathesis. D., Stru- 

 mous. See D., Scrofulous. D., Syphilitic, heredi- 

 tary syphilis. D., Tuberculous, a constitutional in- 

 ability to resist tuberculous infection. Syn., Phthisical 

 diathesis. D., Ulcerous, a general condition favor- 

 able to the development of ulcers. D.. Uric-acid, 

 a constitutional tendency to the accumulation of uric 

 acid and urates in the fluids of the body and the de- 

 velopment of rheumatism, gout, etc.; the arthritic, 

 gouty, rheumatic, or lithic diathesis. D., Varicose, 

 a tendency to abnormal dilation of the veins. D., 

 Virulent Specific, a special predisposition or constitu- 

 tional defect attributable to syphilitic or other infection. 



Diaxon. (See Illus. Diet.) 2. A neuron having two 

 axons. 



Diazoamidobenzene, Diazoamidobenzol (di-az-o-am- 

 id-o-ben'zen, -zol). C 6 H. . X, . XH . C 6 H 5 . A 

 golden-yellow crystalline body obtained by the action 

 of nitrous acid on the cold alcoholic solution of anilin ; 

 by mixing diazobenzene nitrate with anilin; and by 

 pouring a slightly alkaline solution of sodium nitrate 

 upon anilin hydrochlorid or sulfate. It is insoluble in 

 water, readily soluble in hot alcohol, ether, and benzene. 

 It melts at 96 C. and explodes at high temperatures. 

 Syn., Diazobenzeneanilid ; Diazobenzolanilid ; Benzol- 

 azoanilin ; Benzenediazoanilid. 



Diazobenzolanilid (di-az-o-ben-zol-an'-il-id). See 

 Diazoamidobenzene. 



Diazonal ul/-,iz'-o-nal) [d/a, through; ^vrj, a zone]. 

 Applied by Fiirbringer to nerve-trunks which lie across 

 a sclerozone. 



Diborated Uii-bcS-ra-ted). Combined with two mole- 

 cules of boric acid. 



Dibromated {di-bro* '-ma-led). Containing two atoms 

 of bromin in the molecule. 



Dibromethane (di-bro-meth-an'). See Ethylene Bro- 

 mid (Illus. Diet). 



Dicacodyl {di-kak'-o-dil). As./CH 3 ) 4 . A double 

 molecule polymer of the radicle cacodyl. It is a color- 

 less, highly refractive liquid and burns spontaneously 

 upon exposure to the air. It forms combinations di- 

 rectly with the elements, acting like a diatomic mole- 

 cule of .an elementary body. The odor is nauseous 

 and it is excessively irritating. Syn., Diarsentetra- 

 tnethyl; Methylcacodyl. 



Dicalcic (di-kal'-sik). Containing two atoms of calcium 

 in each molecule. 



Dicamphendion {di-kam-fen' -de-on). (C 10 H u O)j. A 

 reaction-product obtained from bromocamphor by action 

 of metallic sodium; it occurs in flat yellow needles 

 which melt at 193 C. 



Dicamphor (di-kam'-for). (C^H^O),. A colorless 

 crystalline substance, melting at 1 66° C, obtained 

 with dicamphendion (a. z:). 



Dichloralantipyrin (di-klo-ral-an-te-pi' '-rin). See Anti- 

 pyrin bichloral. 



Dichlorethane [di-Alor-eth-an'). See Ethylene Chlorid 

 (Illus. Diet.). 



Dichlorid {di-klo / -rid). A compound in each molecule 

 of which two atoms of chlorin are combined with an 

 element or radicle. 



Dichlormethane (di-ilor-meth-an'). See Methylene 

 Dichlorid (Illus. Diet.). 



Dichopsis (dik-op / -sis) [Aixa, apart; uib, the eye]. A 

 genus of plants of the order Sapotacete. D. elliptica, 

 Benth. and Hook., a species indigenous to eastern 

 Asia. It yields a gum called panchontee. D. gutta, 

 Benth. and Hook., a species of Malaya. Its milky 

 juice furnishes, in part, the gutta-percha of commerce. 



Dichotomization (di-kot-o-mi-za'-shun). See Dichot- 

 omy. 



Dichotomy {di-kot'-o-me) \fiixa, in two; rtuveiv, to 

 cut]. The state of being bifid ; the phenomena of 

 bifurcation. D., Anterior, said of a double monster 

 united below the upper limbs. D., Posterior, said 

 of a double monster in which the two individuals are 

 fused above the posterior extremities. 



Dichroa (di-kro'-ah) [rf/f, double; \poa, color]. A 

 genus of plants of the order Saxifragetz. D. febri- 

 fuga, Lour., a species indigenous to the Himalaya 

 region, Malaya, and China. The root and leaves have 

 emetic and purgative properties and are administered 

 as a febrifuge. 



Dichromasy (di-krcZ-mas-e) [<5/c, two; xp&ua, color]. 

 The condition of a dichromat ; inability to distinguish 

 more than two colors. Cf. Monochromasy, Trichro- 

 tnasy. 



Dichromat (di f -kro-mat). A person to whom there 

 are two sharply limited regions at the ends of the 

 spectrum, within which there are no changes of hue, 

 but merely of intensity. All other parts of the spec- 

 trum, the "middle region," can be produced by mix- 

 tures of the two end regions. [Scripture.] Cf. 

 Monochromat, Trichromat. 



Dichromatopsia (di-kro-mat-op/se-ah) [diq, double ; 

 Xp&fia, color; dxluc, sight]. A form of color-blindness 

 in which there is perception of two of the primary colors. 



Dichromic (di-kr^-mik). I. Marked by two colors. 

 2. Containing two atoms of chromium. 



Dichromism (di-hro'-mizm). See Dichroism (Illus. 

 Diet.) and Dichromatopsia. 



Dichromophilism (di-kro-mof '-il-itm) [<5<c , twice ; 

 Xfiuua, color; ou.sir, to love]. Capability for double 

 staining. 



Dichroous, Dichrous (di'-kro-us, di'-krus). Having 

 two colors ; relating to dichroism. 



Diclidostosis ( dik-lid-os-to f -sis ) \Aik7jAe c, folding doors ; 

 oareov, a bone]. Ossification of the venous valves. 

 Syn., Osteodiclis 



