

PARACRESYLOL 



971 



PARAGEXETIC 



J aracresylol (par-ak-cres'-il-ol) [irapd, beside; Kpeag, 

 flesh; oleum, oil]. A derivative of cresol. 



3 aracrusis (par-ak-ru'-sis) [xapd, beside, aside; 

 upoieir, to strike]. I. Insanity, delirium. 2. The 

 checking or "driving in" of an eruption or exan- 

 them. 



D aracusia, Paracusis (par-ak-u' -ze-ah, par-ak-u' -sis) 

 \jzapd, beside; anoveiv, to hear]. Any perversion of 

 the sense of hearing. P. acris, excessively acute hear- 

 ing, rendering the person intolerant of sounds. P. du- 

 plicata, a condition in which all or only certain sounds 

 are heard double. P. localis, P. loci, Politzer's 

 term for the difficulty in estimating the direction of 

 sounds met with in unilateral deafness, or when the 

 two ears hear unequally. P. obtusa, hardness of 

 hearing. P. perversa, synonym of P. ivillisii. P. 

 willisii. See Deafness, Paradoxic. 



'aracyanogen {par -as-i - an'- o -Jen) [-apd, beside ; 

 Kvavoq, blue; yewav, to produce]. A black, amor- 

 phous substance resulting when mercuric cyanid is 

 heated, with the evolution of cyanogen gas; it is a 

 polymeric form of cyanogen. 



'aracyesis (par -as- i ■e / - sis) [-apd, beside; Kvrjoiq, 

 pregnancy]. Extra-uterine pregnancy. 



'aracynanche (par - as -in - ang'- ke) [~apd, beside ; 

 mvAyxVj cynanche]. Inflammation of the connective 

 tissues about the larynx. 



'aracystitis ( par-as-is-ti' -tis) [—apd, beside ; k'vgtk;, 

 bladder ; inq , inflammation] . Inflammation of the 

 connective tissue that surrounds the bladder, 

 aracytic (par-a-si'-tik) [^apd, beside ; Kiror, cell]. 

 Lying among cells. 



aradactylar (par-ad-ak' '-til-ar) [-apd, beside; 66k- 

 tv/jk, a finger]. In biology, pertaining to the paradac- 

 tylum. 



aradactylum (par-ad-ak*- til- urn) [—apa, beside; 

 . a finger: //., Paradactyla\ In biology, 

 applied to the side of a bird's toe, to distinguish it from 

 the top or sole. 



aradenitis (par - ad- en - i'- tis) [rrapd, about ; adijv, 

 gland; iriq, inflammation]. Inflammation of the 



\ areolar tissue about a gland. 



araderm (par* -ad-erm) [—apd, beside ; Sepua, skin]. 

 In biology, Kupffer's term for a peculiar invagination 

 of the blastoderm of reptilian eggs. 



aradesmosis (par-ad-ez-mo' -sis) \xapa, beside ; Seaiwc, 

 bond]. A disease of the skin characterized by a typical 

 connective-tissue neoplasm. 



aradidymis ( par-ad-id' -im-is) [-apd, beside ; Sidvuoc, 

 testicle]. The organ of Giraldes ; the remains of the 

 urinary part of the Wolffian body of the fetus, 

 aradise (par' -ad-is) [-xapafieiooq, a park], i. A park 

 or pleasure-ground. 2. The home of primeval man ; 

 the garden of Eden. P. , Grains of. See Grains of 

 Paradise. P. -tree, the tree Simaruba glauca, 

 found in America from Florida to Brazil. Its bitter 

 bark is a good tonic. Unof. 



aradoxia (par-ad-oks' -e-ah) [_-apddo!-oq , incredible]. 

 An absurd or contradictory statement or proposition. 

 P. sexualis, sexual excitement occurring independ- 

 ently of the period of the physiologic processes in the 

 generative organs ; the abnormal exhibition of sexual 

 instincts in childhood or prior to puberty, 

 iradoxic (par- ad-oks'-ik) [-apddo^oq, incredible]. 

 Of the nature of paradoxia. P. Contraction. See 

 Contraction. P. Deafness. See Deafness. P. Knee- 

 jerk. See Reflexes, Table of P. Muscular Contrac- 

 tion, a slow tonic contraction occurring in a muscle 

 when suddenly relaxed or when its length is suddenly 

 shortened. P. Temperature. See Thermal Ataxia. 

 iraesthesia (par-es-the'-ze-ah ). See Paresthesia. 

 "aesthetic (par-es-thet'-ik). See Paresthetic. 



Paraffin (par'-af-in) [parum, litde ; ajjtttis, related]. 

 I. A white, odorless, translucent, crystalline hydro- 

 carbon obtained from coal-tar, or by the destructive 

 distillation of wood. In a pure state it resembles 

 white wax in physical properties. 2. In chemistry, 

 the term is applied to any member of the paraffin series 

 C n H 2n +2, tie lowest representative of which is CH 4 , 

 methane. In a more limited sense, the high-boiling 

 (beyond 300 C.) solid hydrocarbons arising from 

 the distillation of the tar obtained from turf, lignite 

 and bituminous shales. Pure paraffins occur as white, 

 translucent, leafy, crystalline masses, soluble in ether 

 and hot alcohol. They melt between 45 and 70 C. 

 and are essentially mixtures of hydrocarbons boiling 

 above 300 C. For Table of Paraffins, see under 

 Hydrocarbons. See also Ethane. P. durum, hard 

 or solid paraffin, a mixture of several of the harder 

 members of the paraffin series of hydrocarbons. It is 

 usually obtained by distillation from shale. P., 

 Liquid, a liquid hydrocarbon of the paraffin series. P. 

 Method, a method of interstitial embedding of tis- 

 sues, in which there is thorough and complete impreg- 

 nation of the tissue with the embedding mass. The 

 tissue must be saturated with some fluid with which the 

 paraffin is perfectly miscible, and the fluids usually 

 employed for this purpose are chloroform or turpentine 

 oil. The order of preparation of the tissue is as fol- 

 lows : 1. Into 95 per cent, alcohol for from 12 to 24 

 hours. 2. Into absolute alcohol for from 24 to 48 

 hours, until complete dehydration has been secured. 

 3. Into pure chloroform for from 6 to 8 hours, or until 

 the chloroform has replaced the absolute alcohol. 4. 

 Into a saturated solution of paraffin in chloroform for 

 from 2 to 3 hours. 5. Into pure melted paraffin which 

 has a melting-point of about 50 C. , and in this the 

 tissue remains until every interstice has been com- 

 pletely filled with the embedding mass and all the 

 chloroform has been drawn off. P. molle, soft par- 

 affin or vaselin. See Vaselin. P. -paper, paper 

 saturated with melted paraffin. P., Scaly, a paraffin 

 that has been resolved into hydrocarbons ranging from 

 heptdecane, Cj.H^, to tricosane, C^H^. P.-treat- 

 ment. See Diphtheria. 



Parafibrin (par- af-i'-brin) [~apd, beside ; fibra, a 

 fiber]. A modified fibrin. 



Paraflagellate | par-aflaj'-el-at) [-apd, beside ; flagel- 

 lum, a flagellum]. In biology, provided with para- 

 flagella. 



Paraflagellum (par-af-laj-el'-um) [-apd, beside ; 

 flagellum, a whip : pi., Paraflagella\ In biology, a 

 small supplementary flagellum. 



Paraflocculus ( par-aflok' -u-lus). See Flocculus. 



Paragammacismus (par-ah-gam-as-iz'-mus) [—apd, 

 beside ; yduua. the letter g] . Inability to pronounce 

 the hard g, and also k, other consonants being substi- 

 tuted, as d or t. 



Paragaster (par-ah-gas' -ter)[~apd, beside ; yacrijp, the 

 stomach]. In biology, the central cavity of a sponge. 



Paragastric (par-ah-gas' -trik) [^zapd, beside ; yaarijp, 

 stomach]. Lying alongside the gastric cavity. 



Paragastrula (par - ah -gas*- tru - lah) [~apd, beside ; 

 yiT-ri/p, belly://., Paragastrula''] . In biology, the 

 two-layered sac or gastrula formed by the invagination 

 of an amphiblastula. 



Paragastrular (par- ah -gas' -tru- lar) [rrapd . beside ; 

 yaarr/p, belly]. Pertaining to the paragastrula. 



Paragenesis (par-aj-en' -es-is) [-znpd, beside ; jheoic, 

 origin]. In biology, the third of Broca's four degrees 

 of fecundity in the union of two species. Cf. Agenesis, 

 Dysgenesis, Eugenesis. 



Paragenetic (par-af-en-ef-ik) [-apd, beside ; yeveoig, 

 genesis]. Pertaining to paragenesis. 



