882 



OBJECT 



o 



O. The chemic symbol of Oxygen. The symbol of 

 Oculus, eye. It is also used in prescriptions as the 

 abbreviation of Octarius, a pint. 



O. D. Abbreviation for oculus dexter, right eye. 



Oph. An abbreviation sometimes employed for ophthal- 

 mia, ophthalmoscope, and ophthalmoscopy. 



Oaf (of) [AS., ojlf elf]. An idiot, or underwitted per- 

 son. 



Oak (ok) [ME., oke, oak]. A tree or shrub of the 

 genus Quercus, q. v. O.-bark, an important tannin- 

 containing material used in leather-manufactures. It 

 is taken from the common English oak (Quercus 

 robur) , and contains from twelve to fifteen per cent, 

 of tannic acid. It produces an excellent quality of 

 leather. Other varieties in use are Q. cocci/era, of 

 which the bark, known as coppice-oak, is yellowish- 

 brown in hue and very rich in tannin ; Q. suber (or 

 cork -oak), and Q. ilex (or evergreen-oak). The tannin 

 of the several varieties of oak is known as quercitannic 

 acid, C 17 H 16 9 . In addition to this acid the main 

 constituents of oak-bark are : the first anhydrid of 

 this acid, phlobaphene, C 34 H 3n O, 7 ; its second anhy- 

 drid, C 34 H 28 ]6 ; its third anhydrid, Oser's oak-red, 

 C 34 H 26 15 ; and its fourth anhydrid, Lowe's oak-red, 

 C 34 H 24 O u . Of these, the quercitannic acid and the 

 phlobaphene are especially concerned in the tanning 

 process. O.-bark (Quercus alba, U.S. P., Quercus 

 cortex, B.P.) is an astringent tonic mostly employed 

 in washes and decoctions for external use. The 

 official species in the U. S. is Q. alba ; in Gr. Britain, 

 Q. robur. 



Oakum (o'-kum) [ME., ocumbe, tow]. The fiber ob- 

 tained by picking old rope into pieces. Oakum, vari- 

 ously medicated, is used to some extent in surgical 

 dressings. 



Oamma (o-am'-ah) [ua/ifia, from oiic, ear]. Hearing; 

 ear. 



Oaralgia (o-a-raF -je-ah) [uaptov, ovule; dfyoc, pain]. 

 Ovarian neuralgia. 



Oaria (o-a'-re-ah). Plural of Oarium, q.v. 



O aric (o-ar'ik) [itdpiov, ovule]. Ovarian; relating to 

 the oaria. 



Oariocele (o-a' -re-o-sel) [iodpiov, ovule ; ktjItj, tumor]. 

 Hernia involving an ovary. 



Oariocyesis (o-a'-re-o-si-e'-sis) [itdpiov, ovule; kvticic, 

 pregnancy]. Ovarian pregnancy. 



Oarioncus (o-a-re-ong'-kus) [udpiov, ovule; oyKor, 

 tumor]. An ovarian tumor. 



Oariopathy (o-a-re-op f -alh-e) [iodpiov, ovule ; Trddoc dis- 

 ease]. Any ovarian disease. 



Oariophyma (o-a-re-o-fi'-viah) [udpiov, ovule; (j>i>/na, 

 tumor]. Same as Oarioncus. 



Oariorrhexia (o-a-re-or-eks' -e-a/i) [udpiov, ovule ; pt^iQ, 

 rupture]. Rupture of the ovary. 



Oarioscirrhus (o-a-re-o-skir* '-us) [lodpiov, ovule ; anip- 

 po<;, hard]. Scirrhus of the ovary. 



Oariosteresis (o - a - re - o - ster - e f - sis) [L>dpun>, ovule ; 

 OTiprjmc, privation]. Same as Oariotomy. 



Oariotomy (o-a-re-ot'-o-me) [iodpiov, ovule ; rofiij, a cut- 

 ting]. Surgical removal of an ovary. 



Oaritis (o-a-ri f -tis) [Ldpiov, ovule; irtc, inflammation]. 

 Inflammation of an ovary. 



Oariule (o-a' -re-ul) [itdpiov, ovary; avki}, scar]. A 

 corpus luteum. 



Oarium (o-a'-re-um) [itdpiov, ovule : //., Oaria"]. See 

 Ovarium. 



Oasis (o-a' -sis) [baau;, a dry "spot : //. , Oases']. In 



surgery, an isolated spot of healthy tissue surrounde 

 by diseased tissue. 



Oat (ot) [ME., ote, oat]. A cereal plant, Avena sativc, 

 and A. orientalis, or its seed. Oats are used mainl 

 as food for horses, although they are being largel 

 used as food by man in the United States and otht 

 countries. See Avena. O.-malt, malt made fror 

 oats. O.-meal, the meal made from oats. Th 

 proximate analysis of oat-meal gives fat, 7.74; starch 

 59.88; sugar, I.27; albumin insoluble in alcohol 

 15.66; albumin soluble in alcohol, 4.2 1 ; cellulose 

 2.05; mineral matter, 1. 94; moisture, 7.25. O.-m 

 pyrosis, a condition of fermentative dyspepsia, at 

 tended with acidity, related to the eating of oat-mea) 



Ob- [ob, on, against, towards]. A prefix signifying 

 on, against, or towards. 



Obalinski's Method. See Anesthetic. 



Obconic, Obconical (ob-kon'-ik, ob-kon'-ik-al) [ob 

 reversed; kuvlk6q, pertaining to a cone]. Conic, bu 

 with the point of attachment at the apex. 



Obcordate (ob-kor'-dat) \_ob, reversed ; corda, a heart] 

 In biology, inversely heart-shaped. 



Obdeltoid (ob-del'-toid) [ob, reversed ; del/oides, delta 

 shaped]. In biology, triangular, with the apex down 

 ward. 



Obdormition (ob-dor-mish 1 '-un) [obdorviitio ; obdo, 

 to fall asleep]. The phenomenon known as " sleep' 

 of the limbs ; the benumbing of a part due to inter 

 ference with nervous function. 



Obduction (ob - duk'- skun) [ob, against ; ducere, t' 

 lead]. Post-mortem examination. Necropsy. 



O'Beirne's Tube. Along flexible tube used in makin; 

 rectal injections in cases of obstinate constipation. 



Obeliac (o-be' '-le-ak) [bfteAoc, a spit]. Pertaining t' 

 or situated near, the obelion. 



Obelion (o-be'-le-oti) [bfieZoc, a spit]. See Crani, 

 Points. 



Oberst Method of Inducing Local Anesthesia, h 

 jection of a I per cent, solution of cocain over the cour-i 

 of a nerve-trunk supplying the area to be attacked, j 



Obese (o-bes') \_obedere, to eat]. Extremely fat ; 

 lent. 



Obesity (o-bes' -it-e) \_obesitas, from obedere, to 

 Corpulence; polysarcia. An excessive developmeij 

 of fat throughout the body. Usually it occurs afttl 

 the prime of life, but it may be congenital or mayora 

 at any period of life. £bstein's Tn atment consist* i 

 reducing the quantity of food ingested, and in sda 

 ing a diet that the patient may adhere to for thl 

 remainder of life. Carbohydrates, including 

 sweets, and potatoes, are absolutely forbidden. Brca 

 is limited to the smallest possible quantity. All kinc 

 of meat and vegetables are allowed, especiall; 

 leguminous vegetables, with tea, conee, and 11 

 wines. Bantings Cure excludes almost all fats 

 permits a much larger allowance of albuminous I 



Obex (o'-beks) [L., a barrier: //., Obices]. A 

 of white nervous matter at the point of the calami 

 scriptorius. 



Obfuscation (ob-fus-ka' -shun\ [obfuscate, to n 

 black]. The act of darkening or of producing 1> 

 wilderment of sight. 



Obituary (o-bif'-u-a-re) [obitus, death]. Pertaining 

 death. A notice or account of one who has recent 

 died. 



Object (ob'-jekt) [objectus, a casting befor< 

 jicert, to cast before]. 1. Anything that is perceive^ 



