TRICHLORHYDRIN 



552 



TRINITROPHENOL 



Trichlorhydrin (tri-klor-hi'-drin). CjH 6 Cl 3 . A color- 

 less oily liquid with odor of alcohol. Syn., Glyceryl 

 trichlorid ; Propenyl trichlorid ; Allyl trichlorid. 



Trichlorid (tri-klo'-rid). A compound of an element 

 or radicle with three atoms of chlorin. 



Trichloroquinone (tri-klo-ro-kwin' -on). C 6 HCl s O,. 

 Yellow, flat crystals, soluble in ether and hot alcohol ; 

 melt at 166 C. ; obtained from a sulfuric acid solution 

 of phenol by action of potassium chlorate with HC1. 



Trichobacteria (trik-o-bak-te* '-re-ah). I. Flagellate 

 bacteria. 2. Filamentous bacteria. 



Trichobezoar (trik-o-be' '-zo-ar) [dpi!-, hair; bezoar~\. 

 See ALgagropilus (Illus. Diet.). 



Trichoclasis. See Trichoclasia (Illus. Diet.). 



Trichodectes {trik-o-dek' -tez) [fy/f, hair; rf^/cr^c, a 

 biter]. See Parasites, Ta ble of (Illus. Diet.). 



Trichoepithelioma {trik-o-ep-e-the-le-o'-mah) [dpi!;, 

 hair ; epithelioma], A skin-tumor originating in the 

 hair-follicles. 



Trichoesthesia {trik-o-es - the* - ze • ah) [dpit;, hair; 

 cuoOeoig, sensibility]. The sensation perceived when 

 a hair is touched ; supposed to be distinct from ordinary 

 tactile sensation, (v. Bechterew.) 



Trichoesthesiometer {trik-o-es-the-ze-om' -et-ur) [QpU;, 

 hair; aloflr/oig, sensibility ; fierpov, measure]. An elec- 

 tric appliance for determining the sensibility of the hair. 



Trichomania. See Trichotillomania. 



Trichophagy, Trichophagia {trik-of'-aj-e, trik-o-fa'- 

 je-ah). The eating of hair. 



Trichophobia [trik-o-fo'-be-ali) [Opitj, hair ; (pofioc, 

 fear]. Morbid fear of hair. 



Trichophytic (h-ik-of-it'-ik). I. Relating to the genus 

 Trichophyton. 2. [tyveiv, to grow.] Promoting the 

 growth of hair. 3. An agent promoting the growth 

 of hair. 



Trichosporium (trik-o-spo'-ri-uni) [Opi^, hair; oiropog, 

 seed]. A genus of the Oomycetes. T. beigeli, 

 Vuillemin, a species described as producing nodosities 

 of the beard in some parts of Trance (Nancy), a dis- 

 ease analogous to, if not identical with, that of Co- 

 lombia known as"piedra." 



Trichotillomania {trik-o-til-o-ma' -ne-ah) [dpi!;, hair ; 

 ri'Aleiv, to pluck out; fiavia, mania]. A morbid state 

 described by Hallopeau and characterized by prurigin- 

 ous sensations referred to the hairy parts of the body 

 and intensified in paroxysms, accompanied by a deter- 

 mination to pluck out all the hairs so that artificial 

 baldness results. 



Trichotoxicon {trik-o-toks'-i-kon) [Opi^, hair; to^ck6v, 

 poison]. D. L. Parker's term for a supposed toxin 

 elaborated by decomposition of the organic matter 

 which exists in respired air, which when introduced 

 into the blood exerts a selective poisonous action upon 

 the hair or tissues analogous to hair. Alopecia is held 

 to be due to autointoxication with this substance. 



Trichotoxin {trik-o-toks'-in). A cytotoxin obtained by 

 E. Metchnikoff from the capillary epithelia. Cf. 

 Hematoxin, Hepatotoxin, Leukotoxin, Nephrotoxin, 

 Neurotoxin, Spermatoxin. 



Triconodont {tri-kon f -o-dont) [rpelg, three ; kmvoc, 

 cone; bMvg, tooth]. Applied to a tooth having three 

 conical cusps ; also to the mammals having such 

 molars. 



Tricresol, Trikresol {tri-kre'-sol). A refined mixture 

 of metacresol, 40% ; paracresol, 33% ; orthocresol, 

 27%; soluble in 40 parts of water. It has three 

 times the germicidal value of carbolic acid. 



Tricresolamin {t> i- kresol-am f -in\. A solution con- 

 taining i<? each of ethylenediamin and tricresol ; it is 

 a clear, colorless, alkaline liquid turning yellow on 

 exposure. It is used as tricresol, but is stronger and 

 less irritating. 



Trichromat (tri-krcS-mat) [rpelg, three; ^pw/va, color]. 

 Persons for whom the end regions of the spectrum are 

 of a constant hue and differ only in intensity. Just 

 inside of each end region there is an intermediate 

 region in which any color can be produced by mix- 

 tures of the end color with the color of the intermedi- 

 ate region. Between these intermediate regions lies 

 the middle region, which requires the presence of 

 some third color in addition to colors from the end 

 regions. Most all women and about 96% of men be- 

 long to this class. [Scripture.] Cf. Dichromat, 

 Monoch romat. 



Triethylcarbinol {tri-eth-il-kar f -bin-ol). (C 2 H 5 ) 2 : 

 C(OH - C S H 5 . One of the tertiary heptyl alcohols ; 

 in which the radicle hydrogen of methylalcohol is 

 substituted by 3 molecules of the radicle C,H 5 . Syn., 

 Triethylated met hylic alcohol. 



Triferrin {tri-fer'-in). See Iron Paranucleinate. 



Triformal {lri-form'-al). See Formalin (Illus. Diet.). 



Trigemin {t)i-jem f -in). A substance obtained from 

 pyramidon by action of butyl chloral hydrate, forming 

 white needles soluble in water ; antineuralgic. Dose, 

 0.5-1.2 gm. 



Trigocephalus (tri-go-sef'-al-us). See Trigonoceph- 

 alies (Illus. Diet.). 



Trigone. (See Illus. Diet.) 2. The triangular area, 

 bounded by lines about I ^ inches long, joining the 

 urethral and ureteral orifices of the bladder. 3. The 

 first three cones of an upper molar. 



Trigonellin (tri-go-nel'-in). C 7 H 7 NO,. An alkaloid 

 obtained by E. Jahns from fenugreek, Trigonella 

 foznum-grcecum, L. 



Trigonid (tri'-go-nid) [rpelg, three; yuvia, an angle]. 

 The first three cones of a lower molar. 



Trigonodont (tri-gon' '-o-dont) [rpelg, three; yoxvia, an 

 angle ; bdovg, tooth]. A tooth with three cones in a 

 triangle. 



Trigonum. (See Illus. Diet.) T. lemnisci, the fillet. 

 T. lumbale. See Triangle, Telit's (Illus. Diet.). 

 T. olfactorium. See Area, Broca's Olfactory. 



Triimid (tri-im'-id). See Para mid (Illus. Diet.). 



Triiodocresol (tri-i-o-do-kre* -sol). See Losophan 

 (Illus. Diet.). 



Trikresol. See Tricresol. 



Trilateral {tri-lat'-ur-al) [ties, three; latus, a side]. 

 Having three sides. 



Trilinolein [tri-lin-o'-le-in). CjH 6 (OC 18 H 3 3 )j. A 

 glycerid contained in linseed oil, hempseed oil, sun- 

 flower oil, etc. 



Trimethylanthraquinone {tri-vieth - il-an-thra-kwin'- 

 on). C 17 H u Oj. A crystalline substance melting at 

 161 ° C. obtained from pseudo-cuminoylbenzoic acid 

 by action of concentrated sulfuric acid with heat. 



Trimethylcarbinol {tri-meth-il-kar' -bin-ol). C 4 H ]0 O. 

 Tertiary butylic alcohol obtained from liquid isobu- 

 tylene by action of sulfuric acid with water, occurring 

 in fragrant needles with odor of camphor, soluble in 

 alcohol; melt about 25 C.J boil 82.5 ° C. Syn., Tri- 

 methylattd metkylic alcohol. 



Trimethylethylene (tri-met/i-il-e/h' -il-en). See Penial 

 (Illus. Diet.). 



Trimethylglycol {tri-methil-gli'-kol). See Betain 

 (Illus. Diet.). 



Trineuric (tri-nu'-rik) [rpdf, three ; vtvpov, nerve]. 

 Applied to a nerve-cell provided with three neuiaxons. 



Trinitrocresol (tri-ni-tro-kre'-sol). ( '-1 KN.^ ) r Long 

 yellow crystals, slightly soluble in water, melt at 102 

 C, obtained from nitration of coal-tar cresol ; anti- 

 septic. 



Trinitroisobutyltoluol [tri-ni-tro-is-o-bu-tit/oP-u-ol). 

 See Tonquinol. 



Trinitrophenol (tri-ni-tro-fe'-nol). Picric acid. 



