ETHIDENE 



445 



EUCALYPTOL 



morality. E., Medical, the duties a physician owes 

 to himself, his profession and his fellow-men. 



Ethidene {eth' -id-en) {cether, ether], C 2 H 4 . Ethyli- 

 dene ; a bivalent radicle. E. Chlorid, or Dichlorid, 

 a colorless, transparent, oily fluid, tasting and smelling 

 like chloroform, with a specific gravity of 1. 1 74 at 

 1 7 C. , and boiling at 6o° C. It is prepared from alde- 

 hyd by acting upon it with pentachlorid of phos- 

 phorus ; it is also formed as a bye-product in the pre- 

 paration of chloral, and is separated by distillation and 

 subsequent fractionation. It is insoluble in water, 

 but soluble in alcohol, chloroform, ether, and oils. 

 It is less inflammable than chloroform, but rapidly 

 decomposes. It has been used as a general anes- 

 thetic. See Anesthetic. E. Diethylate. See Acetal. 



Ethiopification {e-the-op-ifik-a' -shun) [aWioift, an 

 .Ethiopian ; facere, to make]. A darkening of the 

 skin such as sometimes results from the misuse of 

 mercurial, silver, or arsenical remedies. 



Ethmocephalus {eth-mo-sef ' -al-us) [ijdfiog, ethmoid; 

 Ktoa'/Jj, head] . A variety of single autositic monsters 

 of the species cyclocephalus, in which there is a repre- 

 sentative of the nose in the shape of a proboscis 

 terminating anteriorly in two imperfect nostrils or in a 

 single opening. There are two eyes and two eye- 

 sockets. 



Ethmocranial {eth-mo-kra'-ne-al) \jffifiog, ethmoid; 

 upaviov, skull]. Relating to the ethmoid and to the 

 rest of the cranium. 



Ethmofrontal (elh-mo-frun'-tal) \rfifioc, ethmoid ; fron- 

 talis ,front] . Relating to the ethmoid and frontal bones 



Ethmoid {eth' -moid) \rj0fi6c, a sieve; eldoc, likeness]. 

 The cribriform bone of the nose, perforated for the 

 transmission of the olfactory nerve ; it forms a part of 

 the base of the skull. 



Ethmoid or Ethmoidal (eth'-moid, eth-moi'-dal) 

 [jjOuoq, a sieve; eldog, likeness]. Relating to the 

 ethmoid bone. 



Ethmoiden (eth-moi' -den) [ififidg, a sieve ; elSog, like- 

 ness]. Belonging to the ethmoid bone in itself. 



Ethmoiditis (eth-moid-i'-tis) \rfi\16g, a sieve ; ecdog, 

 likeness; inc, inflammation]. Inflammation of the 

 ethmoid bone, or of the ethmoid sinuses. 



Ethmoplecosis {eth-mo-ple-ko' -sis) [ififiog, sieve ; tt?J- 

 keiv, to twine ; voaog, disease]. Any disease attacking 

 the cellular tissue. 



Ethmoturbinal (eth-mo-tur'-bin-al) \_rjBuog, a sieve ; 

 turbo, a top]. Relating to the turbinal portions of the 

 ethmoid bone, forming what are known as the supe- 

 rior and middle turbinated bones. 



Ethmyphe [eth'-mife) [yftfiog, sieve; tciwy, web]. The 

 connective tissue. 



Ethmyphitis (eth-mifi' -tis) \ifip.6g, sieve ; ro//, web ; 

 inr, inflammation]. Inflammation of the ethmyphe or 

 connective tissue ; cellulitis. 



Ethnic [eth'-nik) [kdvog, a race]. Pertaining to race. 

 E. Idiocy. See Idiocy, Ethnic. 



Ethnology (eth-nol'-o-je) [Kfrog, a nation ; 7Myog, 

 science]. The comparative study of the races of man- 

 kind, 

 oxycaffem (eth-oks-e-kaf'-e-in), C 10 H w X 4 O 3 . A 

 medy recommended to relieve the pain of herpes zos- 

 ter, migraine, and neuralgia. In overdoses it has a 

 oxic effect ; gr. viij causes drunkenness and vomiting. 

 Dose gr. iv. Unof. 



usa {e-thu'-sah) [didetv, to burn]. A genus of um- 

 belliferous plants. E. cynapium, or fools' parsley, 

 has poisonous qualities. It was formerly used as an 

 emmenagogue. Unof. 



Ethusin (e-thu'-sin) [aldetv, to burn]. A poisonous 

 alkaloid obtainable from Ethusa cynapium, or fools' 



Ethyl (eth'-il) [aldrjp, ether; v).i}, material], C 2 H 5 . 

 The hypothetic radicle of alcohol. E. Blue. See 

 Pigments, Conspectus of. E. Bromid, C,H 5 Br, Brom- 

 ethyl ; monobromethane. A rapid and transient an- 

 esthetic. Narcosis is produced in one-half to one min- 

 ute, and does not last much longer. See Anesthetic. 

 E. Bromid, Liq., 1 in 200, used in angina pectoris. 

 Dose 5ss-ij. Unof. E. Chlorid. C 2 H 5 C1, Chloric 

 Ether. An anesthetic resembling chloroform in action. 

 It is sometimes followed by corneal opacity. See An- 

 esthetic. Unof. E. Eosin. Same as Primrose. E. 

 Green. See Pigments, Conspectus of. E. Iodid. C 2 H 5 

 I. Hydriodic Ether. Used to relieve the dyspnea of 

 bronchitic asthma and edematous laryngitis. Dose to 

 be inhaled, m^ v, three or four times daily. Unof. E. 

 Purple. See Pigments, Conspectus of. 



Ethylamin (eth-il'-am-in) [aldrjp, ether ; i/^, material ; 

 amin\. A non-poisonous ptomaine formed in putre- 

 fying yeast, in wheat-flour, and in the distillation of 

 beet-sugar residues. It is a strongly ammoniacal 

 liquid, boiling at 18. 7 C. , and is miscible with water 

 in every proportion ; it is combustible, and possesses 

 strong basic properties. 



Ethylene (eth'-il-en) [a\dijp, ether; £•/?, matter], de- 

 fiant gas, C 2 H 4 . A colorless, poisonous gas having an 

 unpleasant, suffocating smell. It burns with a bright 

 luminous flame, and when mixed with air explodes vio- 

 lently. It is one of the constituents of illuminating 

 gas, and has strong affinities, especially for chlorin, 

 with which it unites to form an oily compound. E. 

 Blue. See Pigments, Conspectus of. E. Bromid, a 

 light brownish-colored liquid with the formula, C 2 H 4 

 Br 2 . It has been used with great benefit in epilepsy 

 in ^ to 2j^ minim doses two or three times daily 

 Unof. E. Chlorid. See Ethene chlorid. 



Ethylidene (eth-W -id-en). See Ethidene. 



Ethylidenediamin (eth-il'-id-en-di'-ani-in). C 2 H 4 . 

 (NH 2 ) 2 . A poisonous ptomaine obtained from de- 

 composing haddock. Injections of the ptomaine in 

 mice and guinea-pigs produce abundant flow of secre- 

 tion from the nose, mouth, and eyes ; the pupils dilate 

 and the eyeballs project. Violent dyspnea follows and 

 continues until death, which does not take place for 

 twenty-four hours or more. The heart is stopped in 

 diastole. 



Etiolate (e'-le-o-ldt) [F., etioler, to blanch]. In biology, 

 to blanch or be whitened by the exclusion of light. 



Etiolation (e-te-o-la'-shun) [¥r., etioler, to blanch]. The 

 paleness or blanching, in plants or animals, from con- 

 finement in darkness. 



Etiolin (e'-te-o-lin) [Fr., Stioler, to blanch]. The yel- 

 low pigment of etioiate leaves. 



Etiology (e-te-ol'-o-j'e) [airia, a cause ; 7.6 yog, science]. 

 A treatise on, or pertaining to, the causes of disease. 



Etrotomy {e-trof '-o-me) [ffrpov, pelvis ; ~oiiri, section]. 

 A name proposed for pelvic section. Cf. Pubetrotomy. 



Euanthol (u-an'-thol) \_tv, well ; avdog, a flower ; oleum, 

 oil], C-H u O. Euanthylic aldehyd, a product of the 

 distillation of castor-oil ; it is a liquid of pungent odor, 

 boiling at from 153 to 154 C. 



Eucalin (tt'-kal-in) [ev, well ; kcD.v-tzlv , to cover], 

 C fi H 12 O fi . A glucose arising from the fermentation 

 of melitose. Its properties are similar to those of 

 inosite. It is non-fermentable, and dextrorotatory. 



Eucalyptol (u-kal-ip> '-tol) \cv, well; m/v-reiv, to 

 cover], C^HjgO. An antiseptic camphor, prepared 

 from the essential oil derived from the distillation of 

 the leaves of E. globulus, and other species of the 

 genus. It is used in bronchitis and chronic catarrh ; 

 and also in ear- diseases and in urethritis, and externally 

 in various liniments and washes. Dose n\iv, in cap- 

 sules, three times daily. Unof. 



