HYDROPYRETIC 



586 



HYDROZOON 



Hydropyretic (hi-dro-pi-ret' -ik) [ydup, water; ■nvptjoc, 

 heat]. Pertaining to, or affected with, hydropyretos. 



Hydropyretos (hi-dro-pir' '-et-os) [vdup, water; nvperoq, 

 heat]. Sweating fever. 



Hydroquinin (Jii-dro-kwin'-iit) [vdup, water; quina, 

 Peruvian bark], C 20 H 26 N 2 O 2 . An alkaloid obtained 

 from cinchona, said to be an admirable antipyretic. 

 Unof. 



Hydroquinone [hi-dro-kwin' '-on) [iidup, water ; quina, 

 Peruvian bark], C 6 H 6 2 . Quinol, a divalent phenol 

 that results on boiling arbutin with dilute H 2 S0 4 , or 

 from the oxidation of anilin. It crystallizes in mono- 

 clinic leaflets and hexagonal prisms, that melt at 169 

 C. It is readily soluble in water, alcohol, and ether, 

 and is valuable as an antipyretic, without producing 

 injurious after-effects ; it is also used as an antiseptic. 

 Dose gr. xv-xx. Unof. 



Hydrorhiza (hi-dro-ri' -zah) [vdup, water; p'iC,a, root]. 

 In biology, the disc of attachment of a Hydra or the 

 homologous organs in other Hydrozoa. 



Hydrorrhachiocentesis [hi - dror -ak-e-o- sen - te'- sis) 

 [vdup, water ; p&xig, spine ; kevttjcsi.c, puncture]. Punc- 

 ture of the spinal meninges in the treatment of hy- 

 drorrhachis. 



Hydrorrhachis {hi-dror 1 '-ak-is) [vdup, water ; paxig, 

 spine]. Dropsical effusion within the vertebral canal. 

 H. interna, syringomyelia, q. v. 



Hydrorrhachitis (hi-dror-ak-i 1 '-(is) [vdup, water ; pax^C, 

 spine ; trig, inflammation]. Hydrorrhachis with in- 

 flammation. See Spina bifida. 



Hydrorrhea (hi-dror-e' -ah) [ydup, water ; poia, flow]. 

 A flow of water. H. gravidarum, a condition oc- 

 curring occasionally in the pregnant woman, in which 

 there is a periodic discharge from the uterus of thin 

 mucus that accumulates as a result of hypertrophy of 

 the uterine glands with excessive secretion. 



Hydrosadenitis {hi-dros-ad-en-i' -tis) [vdup, water ; 

 adijv, gland; trig, inflammation]. See Hidrosad- 

 enitis. H. phlegmonosa, a furunculus beginning 

 in a sweat-coil. It is also called Hydradenitis destru- 

 ens suppurativa (Politzer), Acnitis (Barthelemy), and 

 Folliculitis exulcerans (Lukasiewicz). 



Hydrosalpinx (hi-dro-sal* '-pinks)[vdup, water ; ad?nriy§, 

 trumpet]. A distention of the Fallopian tube with a 

 fluid substance, and its obstruction at the fimbriated 

 extremity, caused by inflammation. It is frequently 

 a result of gonorrhea. 



Hydrosarca (hi-dro-sar' -kah) . See Anasarca. 



Hydrosarcocele (hi-dro-sar' -ko-sil) [vdup, water; 

 oapt-, flesh ; nijkri, hernia]. Sarcocele with dropsy of 

 the tunica vaginalis testis, or with true hydrocele. 



Hydroscheocele (hi-dros' -ke-o-sel) [ydup, water ; bax^ov, 

 scrotum ; KTjArj, a tumor] . Dropsical hernia of the 

 scrotum. 



Hydrosoma {hi-droso' -mah) [vdup, water ; aufia, body: 

 //., Hydrosomata\ In biology, the entire double- 

 walled body of a hydrozoon. 



Hydrospermatocyst (hi-dro-sper' ' -mat-o-sist) [vdup, 

 water; airepfia, seed; Kvarig, cyst], A hydrocele 

 whose fluid contains spermatozoa. 



Hydrosphygmograph {hi-dro-sfig' -mo-graf) [vdup, 

 water ; c^vyfidg, pulse ; ypafytiv, to write] . A sphyg- 

 mographic apparatus, in which the registering device 

 is actuated by the fluctuations of a body of water. 



Hydrostatic, or Hydrostatics {hi-dro-stal'-ik, or -iks) 

 [vdup, water ; ararinii, standing]. The science treat- 

 ing of the conditions and properties of liquids in a 

 state of equilibrium. H. Test. See Birth. 



Hydrostomia {Jii-dro-sto' '-me-ah) [vdup, water ; ardpa, 

 mouth] . Excessive excretion of water from the mouth. 



Hydrosudopathy (hi-dro-su-dop' -ath-e) [ydup, water; 

 sudor, sweat; ndhog, disease]. The treatment of dis- 



ease by sweating and the use of water internally or 

 externally, or both. 



Hydrosulphuric acid (hi-dro-sul-fu'-rik). See Acid. 



Hydrotheca (hi-dro-the' -kah) [vdup, water ; M/ht), a 

 case : pi., Hydrotheca;']. In biology, a polyp-cell ; the 

 cuticular investment of a hydroid polyp, forming a 

 cup-like receptacle allowing the protrusion of the 

 distal moiety of the polypite. 



Hydrotherapeutics {hi-dro-ther-ap-u' -tiks) [vdup, wa- 

 ter ; depa-KEveiu, to heal]. That part of balneology 

 treating of the hygienic use of water, and of its thera- 

 peutic application to the body. Se.z,a\so,Bath and Aqua. 



Hydrotherapy {hi-dro-ther'-ap-e). See Hydrotherapeu- 

 tics. 



Hydrothion (hi-dro-thi ; -on) [vdup, water ; Oelor, sul- 

 phur]. Hydrogen sulphid. 



Hydrothionammonemia (/«' - dro - thi ■'- on - am - o-ne'- 

 me-ah) [vdup, water; dtiov, sulphur; ammonia, 

 ammonia ; dl/xa, blood]. The presence of hydro- 

 sulphid of ammonium in the blood. 



Hydrothionemia (hi-dro-thi-on-e'-me-ah) [vdup, water ; 

 delov, sulphur; alfia, blood]. The presence of hy- 

 drogen sulphid in the blood ; also, the train of mor- 

 bid symptoms resulting therefrom. 



Hydrothionuria [hi-dro-thi-on-u' '-re-ah ) [vdup, water ; 

 Oeiov, sulphur; ovpov, urine]. Hydrogen sulphid 

 the urine. 



Hydrothoracic (hi-dro-tho-ra' -sik) [vdup, water ; 6upa% 

 thorax]. Pertaining to hydrothorax. 



Hydrothorax (hi-dro-tho' -raks) [vdup, water ; 6upa% 

 chest]. A non-inflammatory dropsy of the pleura 

 usually involving both sacs. H. purulentus. Syr 

 onym of Empyema. 



Hydrotis {Jii-dro' -tis) [vdup, water ; ovg, ear]. Drops 

 of, or effusion into, the ear. 



Hydrotomy {Jii-drot'-o-me) [vdup, water; ri/iveiv, t 

 cut]. A method of dissecting certain tissues by th 

 forcible injection of water into the arteries and capil 

 laries, whereby the structures are separated. 



Hydrotropism (hi-drof '-ro-pizm) [vdup, water ; rpdiroq 

 a turn]. In biology, that state of a growing plant 

 organ which causes it to turn either away from, c 

 toward, moisture. 



Hydrotympanum (hi-dro-tim' -pan-um) [vdup, water 

 tympanum, the ear-drum]. Dropsical effusion int 

 the cavity of the middle ear. 



Hydrovarium [Jii-dro-va' -re-um) [vdup, water; ova- 

 rium, ovary]. Ovarian dropsy, or cystoma. 



Hydroxid (hi-droks'-id) [vdup, water; 6ijvg, sharp]. 

 A metallic or basic radicle combined with one or 

 more hydroxyl groups. Hydroxids may be regarded 

 as formed from water (HOH) by the substitution for 

 one of its hydrogen atoms of a metal or basic radicle. 



Hydroxyl (hi-droks' -il) [vdup, water; o^vi;, sharp]. 

 A compound radicle, OH, that has never been iso- 

 lated, but which is a factor in a vast number of chemic 

 compounds. Thus, the oxygen bases are reganhd as 

 compounds of hydroxyl with electropositive atoms or 

 radicles, e.g., sodium hydroxid, NaOH. Water may 

 be regarded as hydroxyl hydrid, HOH. 



Hydroxylamin (Jii-droks-il' -am-in) [vdup, water ; fiftf, 

 sharp; amin\. A basic substance (NOH. t ) known 

 only in solution in water or in combination with acids. 

 It is prepared by passing nitric-oxid gas through a 

 solution containing nascent hydrogen. The aqueous 

 solution is colorless and odorless, with a strong alka- 

 line reaction. Hydroxylamin hydrochlorid is recom- 

 mended as a good substitute for chrysarobin in the 

 treatment of skin -diseases. 



Hydrozoon (hi-dro-zo / -on) [vdup, water; C<pw, an ani- 

 mal]. A cnidarian of the sub-class Hydrozoa, contain- 

 ing the orders Hydridw, Hydromeduste , Siphonophor** 



