KI'I/ui i\ 



437 



11:1' II' ».\ 



izoon [ep-e-zo* '-on) [eiri, upon; I'-xn; an animal: 

 ., Ept ■]. An animal living as a parasite upon 

 mother; an external parasite, as distinguished from 

 n Entozoon. 



. jizootic | p ■ zo-ot'-ik) [eiri; upon; C'-»n\ animal]. 

 i. Affecting the lower animals epidemically. 2. Aeon 

 tagious,or generally pre> alent disease affe< ting animals. 



Epizooty (ep-e-zo / -o-le) [eiri, upon ; inimal]. An 



epizootic disease. 



Eponychium [ep-o-nik' '-e-um) [eiri, upon; bwif, finger 

 nail]. A horny condition ol the epidermis from the 

 second to the eighth month of fetal life, indicating 

 the position of the future nail. 



Eponym [ep f -o-nim) [ v/ioc, named after a person]. 



A term derived from the name of a person. See 

 Table ,>/' Eponymic Diseases, under /' 



Epobphorectomy {ep-o-o-for-ek / -to-me) [eirw6fi 

 epoophoron ; ihrmi/'/, excision]. Surgical removal of 

 the epoophoron. 



Epoophoron 1 p-o-off'-or-ori) [/-/.upon; , [ay 



ing eggs]. Same a.s Parovarium. 



Epostoma (ep-os-to'-mali) [eiri, upon ; boreov, bone]. 

 An exostosis. 



Epsilon-bacillus. See Bacteria, Synonymatic Table of . 



Epsom Salts {ep / -sum). See Magnesium. 



Epstein's Dressing. A method of dressing the um- 

 bilical cord. It consists of the ordinary linen quad- 

 rangular belly-plastron with a central cap-like recepta- 

 cle for the umbilical stump. 



Epulis {ep-u'-lis) [eiri, upon ; niXa, the gums]. A hard, 

 fibrous tumor of the alveolar processes of the jaws. 



Epulosis (ep-u-lo' '-sis) [eirovTiaxrig : eiri, upon; ovXij, 

 scar]. Cicatrization ; a cicatrix. 



Epulotic {ep-u-lof '-ik ) [eiri, upon; ov/.i/, scar]. I. 

 Promoting epulosis or cicatrization. 2. A remedy 

 or application that promotes the healing of wounds or 

 sores. 



Equation {e-kwa'-zhun) [aquare, to make equal]. In 

 chemistry, a collection ol symbols so arranged as to 

 indicate that if the bodies represented by the symbols 

 be brought together a chemic reaction will take place. 

 E., Personal, an allowance for individual peculiarity 

 or error in an observers work, in order to render it 

 approximately accurate. 



Equator {e-kwa f -tor) [/square, to make equal]. An 

 imaginary circle surrounding a sphere. E. of a cell, 

 the boundary of the plane through which division takes 

 place. E. of the eye, the aquator oculi ; the 

 boundary- of the transverse and central vertical plane 

 of the eye. E. of a Lens, the angular edge at the 

 meeting of the anterior and posterior surfaces' of the 

 lens. 



Equatorial [e-kioa-tor 4 '-e-al) [aquare, to make equal]. 

 Pertaining or belonging to an equator. E. Plate. 

 See Karyokinesis and Plate. 



Equilibration [e-que-lib-ra' -shun) [aquilibrare, to bal- 

 ance equally]. Equipoise ; even balance. 



Equilibrism \e-quil f -ib-rizm) [aquilibris, evenly bal- 

 anced]. The opinion that every voluntary act may be 

 counteracted by an opposing inhibitory volition. 



Equilibrium (e-kwe-lib'-re-um) [aquus, equal; libro, 

 balance]. An even balancing of a body or condition. 

 E., Stable, when, after slight disturbance, the body 

 will return to its original condition or position. E., 

 Unstable, when it will not so return. 



Equination [e-kwin-a' '-shun) [equinus, of ahorse]. I. 

 Inoculation with the virus of equine smallpox. 2. 

 Inoculation with the virus of equinia. 



Equinia {e-kwin f -e-ah) [equus, a horse]. Glanders. 

 Farcy. A contagious, specific disease, with both local 

 and general symptoms, derived from the horse or ass. 

 It affects chiefly the skin, mucous membranes and 



lymphatics, and begins with a purulent nasal discharge, 

 the respiratory, ocular and oral membranes being fur- 

 ther successively involved. It is of microbic origin. 

 See Bacillus mallei, in Bacteria, Synonymatic Tabi 



Equinist m-ist) [equus, a horse]. One wh 



lieves in 1 1 of a disi mus. 



Equipollent [e kwip* lent) [a juu . equal ; polle. 

 1m- strong]. < M" equal power or efficiencj ; said, 

 example, of opposing muscles, or of parents in their 

 inlluem e upon offspring. 



Equisetum [ek-wis-e 1 '-turn) [equus, a horse ; sata, bris- 

 tle]. A genus of cryptogamous plant- ; the hi 

 tails, or scouring rushes. E. hiemah and E. palustre, 

 ot Europe and X. Aim rii a. are requited t., |„- effective 

 and harmless diurel ii 



Equitant [ek 1 '-wit-ant) [equitare, to ride]. In biology, 

 literally, riding. A]. plied to leaves, like- those of the 

 iris, which are vertical and folded lengthwise, so that 

 each leaf, toward tl overlaps or straddles the 



1 ; also applied to the longitudinally folded anten- 

 na of certain insei 1 s. 



Equivalence, Equivalency {e-kvriv'-al-ens, e-quiv f -al- 

 1 11 te) [aquus, equal ; valere, to be worth]. Equality 

 of valence or saturating power. See / In 



chemistry, the property possessed by an element or 

 radical of combining with another element or radical 

 or of replacing it in a compound body in definite and 

 unalterable proportions. It i- sometimes used as syno- 

 nymous with valence or quantivalen 



Equivalent [e-kivii/ -al-ent) [aquus, equal ; valere, to 

 be worth]. Of equal valency. E. Focus. 

 Poats. 



Equivocal {e-kwiv 1 '-o-kaT) [aquus, equal ; vox, sound]. 

 Of doubtful significance, as equivocal symptoms. 



Eradication (e-rad-ik-a'-shuri) [<?, out; radicare, to 

 root]. Complete or thorough removal. 



Eradiculose [e-rad-ik' '-u-los) [e, priv. ; radicula, a 

 rootlet]. In biology, destitute of rootlets or rhizoids. 



Erasene [er'-as-iti) [eradere, to scratch out ; from the 

 power of erasing grease-spots]. A trade-name for 

 California abietene. See Abietene. 



Erasion [e-ra f -zhuri) [e, out ; radere, to scrape]. The 

 act of scraping or cureting. 



Erb's Point. See Point. E. Reaction of degener- 

 ation. Deviation from the normal formula of muscu- 

 lar response to galvanism. E. "Upper-arm type" 

 of palsy. A myotrophy characterized by paralysis of 

 the deltoid and often of the supraspinatus and infra- 

 spinatus, the biceps, brachialis antic us. and the supin- 

 ators. See Diseases, Tabic of. 



Erbium (ur'-be-um) [E.]. A rare element ; symbol 

 Er. See Elements, Table of. 



Erdmann's Test. See Tests, Table of 



Erdmann and Uslar's Test. See Tests, Table of. 



Erect [e-rekt* ) [erectus, set up]. E T pright ; in the state 

 of erection. E. Posture. See Postur . Table of. 



Erecthites [e-rek-thi'-tez) [ept \ h -/.■/. groundsel] 

 genus of composite plants. E. hieracifolia. Eire- 

 weed ; a coarse composite-flowered plant common in 

 waste-lands in X. America ; it is astringent and tonic. 

 Unof. 



Erectile [e-rekf-HT) [erigere, to set up]. Pertaining to 

 or possessing the characteristic stiffening, rigidity, or 

 erection. E. Glossitis. See Glossitis. Parenchy- 

 matous. E. Tissue, that which is capable of erection ; 

 consisting of a network of expansile capillaries that 

 under stimulus becomes engorged with blood. 



Erection [e-rek* '-shun) [eiigere, to set up]. The con- 

 dition of temporary and functional fulness and firm- 

 ness of the penis, clitoris, etc., due to sexual excite- 

 ment, friction, etc., the mechanism consisting in an 

 overfilling of the blood-vessels with inhibition of the 



