CHRMMATOrsiA 



295 



CHRONIZOOSF IRE 



Chromatopsia {Aro-mat-op / -s, ah) [^pw/wi, color ; •■■ 

 vision]. Abnormal sensation of color. It may be 

 due to disorders of the optic centers, or to drugs, 

 especially santonin. 



Chromatopsy {kro' mat-op-se). See Chromatopsia. 



Chromatoptometry (iro-mat-op-tom'-et-re) \_xpupa, 

 color; dirTeiv, to sec ; » r ; i/i, ;i measure]. The test- 

 ing of the sensibility of the eye with respect to color- 

 perception. 



Chromatoscope [kro-matf -o-skb [;r/pd>pa, color; 

 OKoKtiv, to observe]. An instrument for determining 

 the retractive index of colored light. 



Chromatoscopy [hro-mat-os / -ho-pe) [^poi^a, color; 

 OKcmelv, to observe]. The determination of the color 

 of objects. 



Chromatosis (kro-mat-o / -sis) [ \p<~,iim. color]. Pigmen- 

 tation ; a pathologic process or pigmentary disi 

 consisting in a deposit of coloring-matter in a locality 

 where it is usually nut present, or in excessive quan- 

 titv in regions where pigment normally exists. 



Chromatosome [kro-maf '-o-sdtri) [^pdi/zrc, color; cujia, 

 body]. In bii »logy, the " nuclear rods " of the nucli 



Chromaturia [kro-mat-u' '-re-ah) [;fpejpa, color; ovpov, 

 urine]. Abnormal coloration of the urine. 



Chrome {krom) [ \p(.:iui, color]. Chromium, q.v. C- 

 alum. See Pigments, Conspectus of. C. -black. 

 See Pigments, Conspectus of. C.-carmin. Same as 

 Clirome-red. C. chlorid. See Pigments, Conspectus 

 of. C. -garnet. Same as Chrome-red. C. -green. See 

 Pigments, Conspectus of. C. -orange. Same as Chrome- 

 red. C.-red, a pigment ; basic lead chromate. See 

 Pigments, Conspectus of. C. -vermilion. Same as 

 Chrome-red. C. -yellow, lead chromate, a pigment. 

 See Chromium, and Pigments, Conspectus of. 



Chromesthesia (krom-es-the f -zc-ah) [xpupa, color; 

 aioOrjaic, perception by the senses]. The association 

 of colors with words, letters, and sounds. 



Chromhidrosis (krom-hid-rc/sis). Same as Chromid- 

 rosis. 



Chromic [krom f -ik) [xP^! La > color]. Pertaining to or 

 made from chromium. C. Acid. See Acid. C. Acid 

 Test. See Tests, Table of. 



Chromicize (kr& '-mis-iz). To impregnate with chromic 

 acid. 



Chromidrosis [krom-id-ro'-sis) [yp(j//a, color; idpojf, 

 sweat]. A rare condition of the sweat in which it is 

 variously colored , being bluish , blackish, reddish, green- 

 ish, or yellowish. Black sweat (Seborrhea nigricans i 

 occurs usually in hysterical girls, the part aftected being 

 the face. It is associated with chronic constipation and 

 is due to the presence of indican in the sweat. Red 

 sweat, hematidrosis, may be due to an exudation of 

 blood into the sweat-glands, or to the presence of a 

 microorganism in the sweat. See Jl/icrococcus hama- 

 todes, Babes, under Bacteria. Table of. 



Chromium [kro'-me-um) [xP (J " a color]. Cr =52.2; 

 quanti valence II and IV. One of the elements of 

 the iron group. The various salts of chromium, 

 especially chromic acid, Cr 2 < > ; , are much used in the 

 manufacture of pigments and in dyeing textile fabrics. 

 All are poisonous. Potassium dichromate (bichromate 

 of potash), K.,Cr 2 7 , is used in various pharmaceutic 

 and chemic operations. C. -green. Same as Chrome- 

 green. 



Chromocrinia {kro-mo-krin' -e-ah) [ xpajia, color ; 

 npivsiv, to separate]. The secretion of coloriny- 

 matter, as in the sweat, etc. 



Chromocytometer { kro-mo-si-tom' '-ef-er) [ xp''<"" . 

 color; kvtoc, cell; uirpov, a measure]. An instru- 

 ment for estimating the proportion of hemoglobin 

 present in the blood. 



Chromocytometry (kro-mo-si-tom'-et-re) [xp^ un ^ 



color; KVTOQ, cell ; uirpov, a. va tsure; v6aog, disea 

 The estimation of hemoglobin bj means of the 

 chromocytometi 1 . 

 Chromodermatosis [kro-mo-der-mat-o f -sis) \_XP { 

 color; 6ipfia, skin]. A skin-disi 1 by 



discoloration of the surface. 

 Chromogen [kro* '-mo-jen) \xpu\M, color; , . pro- 



duction]. Any principle of the animal or vegetable 

 economy which (though it is itself not of any | 

 nounced color) is susceptible, under suitable circum- 

 stances, of being changed into a coloring-matter. 



Chromogenic (kro-mo-jen'-ik) [ > 



luction]. I. Relating to chromogen. 2. Color- 

 producing. 



Chromoleucite (hro-mo-Iu'-slt) [^pw/ta, color; T&vK&q, 

 white]. Same as Chrom 



Chromopare (kr<>' -mo-par) [xpu/ia, color]. In biology, 

 applied by Beyerinck to those chromogenic bacteria 

 that excrete the pigment, remaining colorless them- 

 selves. Cf. Chromophori and Para-chromophor. 



Chromophan (kro'-mo-fin) [xpafia, color; (paiveiv, to 

 appear]. In biology, the pigment of the inner seg- 

 ments of the retinal cones of certain animals. There 

 are at least three varieties, chlorophan, rhodophan, 

 xanthophan. (Ruhnes 1. 



Chromophile [kro , -mo-fil\. Same as Chromophil u . 



Chromophilous {kro-moff' -il-us) [ \puj.u, color ; <■ /or, 

 loving]. Readily stained; easily absorbing color; 

 applied to tissues prepared for microscopic study. 



Chromophore (kro' -mo-fur) | , color; tpipetv, to 



bear]. In biology, applied by Beyerinck to those 

 chromogenic bacteria that possess pigment as an 

 integral part of their organism. Cf. Chromopare and 

 Para-chromophor. 



Chromophytosis {kro-mofi-to'-sis) \ a, color; 



(j)vr6v, a plant]. I. Any microscopic plant-growth that 

 produces a discoloration of the skin in which it grows ; 

 any pigmentary skin-disease caused by microscopic 

 vegetation. 2. A synonym of Tinea versicolor, or 

 Pichstedt' s Disease. See Tinea versicolor, anil Diseases, 

 Table of. 



Chromoplastid, or Chromoplastidule (kro-moflas'- 

 tid, or kro-mo-plas'-t id-til ') \_xpuim, color; TT/.aooeiv, 

 to form]. In biology, a pigment-granule imbedded 

 in the protoplasm of a plant or animal. It is also 

 called chromoleucite. 



Chromopsia {krdm-op'-se-ah). See Chromatopsia. 



Chromoptometer [kro-mop-tom r -et-er) [. . <olor; 



// rpov, a measure]. A contrivance for determining 

 the extent of development of color-vision. 



Chromosome (kro f -mo-sotn) \_xpafia, color; aufia, 

 bodv]. Any one of the nuclear chromatin-fibrils <>l 

 a cell. According to some observers there is only one 

 such fibril in closely intertwined folds. Others say 

 that the chromosomes are many, and of two varieties, 

 the fine and the coarse. 



Chromostroboscope ( kro-mo-stro' -bo-skop) [ xP<~>" n , 

 color; crp63or, a twisting; OKOtreiv, to inspect]. A 

 device for showing the persistence of visual impres- 

 sions of color. 



Chromule {kr</-mul) [xpi'.wn. color; vhj, matter]. In 

 biology, coloring-matter in plants, especially when not 

 green, or when liquid. 



Chronic {kron'-ik) [;rpdvoc, time]. Long-continued; 

 of long duration ; slow of progress ; opposed to a 

 and to subacute. 



Chronicity [kro-nis'-it-e) \jxp6voc, time]. state 



of being chronic or long-continued. 



Chronizoospore [kro-niz-o* '-o-spor) [upoviog, 1 



an animal; oiropa, seed]. One of the microzoogoni- 

 dia or minute zoospores or resting-spores, produced by 

 the water-net, Hydrodictyon. 



