

OSTEOSPONGIOSIS 



Osteospongiosis (os-te-o-spun-je-o J 'sis). See Osteoph- 



thoria and Osteospongioma. 

 Osteosteatoma (os-te-o-ste-ut-o' -man) [bareov, bone ; 

 areap, fat ; bfia, tumor: //., Osteosteatomatu\. Fatty 

 tumor, or growth, of bone. 

 Osteoteleangiectasis (os' -te-o-tel-e - an -je - ek' - tus-is) 

 or, bone ; re'/.oc, end; ayyelov, vessel; earaatq, 

 dilatation]. Dilatation of the blood-vessels of a bone ; 

 also a telangiectatic osteosarcoma. 

 Osteothrombosis (os' ' -te-o-throm-bo 1 '-sis) [bareov, bone ; 

 0pou3uaic, thrombosis]. Thrombosis of the veins of 

 a bone. 

 Osteotome (os'-te-o-tom) [bareov, bone; rofii), a cut- 

 ting]. I. A saw, or other instrument, for cutting 

 bone. 2. An instrument used in cutting the bones of 

 the fetal head in embryotomy. 

 Osteotomist (os-te-ot'-o-mist) [bareov, bone; to/it/, a 

 cutting]. One who performs osteotomy, 

 eotomy (ps-te-of '-o-tne) [bareov, bone ; to/it/, a cut- 

 ]. The cutting or division of a bone. See 

 'urns' , BurzvelPs, Gunt's, and other operations, in 

 rations, Table of. O., Complete, one in which 

 bone is completely divided. O., Cuneiform, an 

 eotomy in which a wedge of bone is removed . 

 ., Extra- articular, one not involving a joint. O., 

 Incomplete, one in which the bone is not completely 

 divided. O., Linear, a simple division of a bone, 

 ithout removal of any part. O., Partial. Synonym 

 0. , Incomplete. O., Simple. Synonym of O., 

 near. O., Supracondylar, one done just above 

 the condyles of the femur. 

 Osteotophus (os-te-of '-o-fus) [bareov, bone ; tophus, 



sandstone]. A bony outgrowth or excrescence. 

 Osteotribe (os'-te-o-trib). Same as Osteotrite. 

 Osteotrite (os'-te-o-trit) [bareov, bone ; rpi3eiv, to rub]. 

 A scraping-instrument for use in operations upon 

 carious bones. 

 Osteotylus (os-te-o-ti' '-/us) [bareov, bone : rv'fjoc, cal- 

 lus]. Bone-callus. 

 Osteulcus (os-te-ul'-kus) [bareov?.noc : bareov, bone ; 



Buteiv, to draw]. A bone-forceps. 

 Osthelcus (ost-Ael'-kus) [bareov, bone ; e/.Koc, suppura- 

 ! ting around]. Caries of bone. 

 Osthistos (ost-his' -tos) [bareov, bone; iaroc, tissue]. 



Osseous tissue. 

 Ostial (os'-te-al) [ostium, a door or mouth]. Pertaining 



to an opening or orifice. 

 Ostiole (os'-te-olj [ostium , a door, mouth]. In biology, 

 a small ostium, as the orifices in plants for the discharge 

 of spores, pollen-grains, etc., or in insects for the 

 emission of irritant or foul-smelling fluids. 

 Ostiolum (os-ti'-o-lum) [dim. of os, mouth]. A valve. 

 Ostitis (os-ti'-tis). See Osteitis. 



Ostium (os'-te-um) [L., a door://., Ostial. In biol- 

 ogy, a mouth or mouth-like opening ; specifically, one 

 of the slits in the dorsal vessel of certain Crustacea. 

 {Branckippus). O. abdominale, the orifice of the 

 oviduct communicating with the peritoneal cavity. 

 0. cesophageum ventriculi, the opening of the 

 esophageal or cardiac orifice of the stomach. O., 

 Gastric, the mouth by which a radial canal in sponges 

 opens into the paragaster. O. internum, the orifice at 

 the beginning of the oviduct in the uterus. O. 

 pharyngeum, the pharyngeal opening of the Eusta- 

 chian tube. O. tympanicum, the tympanic opening 

 of the Eustachian tube. O., Vaginal, the external 

 orifice of the vagina. 

 Dstology (os-tol f -o-je). Same as Osteology. 

 Dstoma (os-to'-mah). Synonym of Osteoma. 

 Dstosis (os-to'-sis). Same as Osteosis. 

 Jstracosis (ps-trak-o' -sis) [barpanov. oyster-shell ; vbaoc, 

 disease]. The degenerative change that sometimes 



949 OTITIS 



takes place in a portion of bone and causes it to re- 

 semble an oyster-shell. 



Ostrea (os'-tre-uh) [barpeov, oyster]. Oyster. 



Ostrein (os'-tre-in) [barpeov, oyster]. A nitrogenous 

 body of uncertain composition found in the flesh of 

 oysters. 



Ostreios (os-tre-i'-os) [barpeov, oyster; 16c, poison]. 

 The poison found in some oysters and mussels. 



Ostreotoxicum (ps-tre-o-toks' -ik-um). Synonym of 

 Ostreios. 



Otacoustian, Otacoustic (o-tuk-oos'-te-an, o-tuk-oos' 

 -tik) [ore, gen, Lroq, ear; anovacc, hearing]. Per- 

 taining to, or aiding, audition. 2. An ear-trumpet. 



Otacousticon (o-tuk-oos' -tik-on) [ovc, ear; anovaic, 

 hearing]. An otacoustic, or ear-trumpet. 



Otagra (o-lu'-gruk). Synonym of Otulgia. 



Otalgia \p-tal' -je-ah) [ovc, ear ; a?.yoc, pain]. Earache. 



Otalgic (o-tal'-jik) [ovc, ear; a?.- y oc, pain]. Affected 

 with, or pertaining to, otalgia. 



Otalgy (o-tal'-je). Same as Otalgia. 



Otaphone (o'-taf-dn) [ovc, ear; owviy, sound]. A 

 clamp so adjusted as to throw the external ears for- 

 ward and outward, and thus assist the hearing. 



Otechos, Otechus (o'-tek-os, o'-tek-us). Synonym of 

 Tinnitus attrium. 



Otemplastrum (o-tem-plas' -trum) [ovc, ear ; eu^'/.aa- 

 , plaster]. A plaster placed behind the ear. 



[° ld -3 . 



Otenchyte (o' -ten-kit) [ore, ear; eyx veiv > to pour in]. 

 An aural syringe. 



Othelcosis (o-t/iel-ko'-sis) [oig, ear ; e/.nuaic, ulcera- 

 tion]. Ulceration of the ear. 



Othematoma (ot-hem-at-o / -mah) [ovc, ear; atua, blood; 

 baa, tumor: //., Othematomula~\. Hematoma of the 

 external ear, usually the pinna; hematoma auris. 

 The condition is not rare in insane persons, whence 

 its name " insane ear.'''' It is probably a trophic le- 

 sion. 



Othemorrhea (ot-hem-or-e'-uh) [ovc, ear; ai/ia, blood; 

 poia, flow]. A sanguineous discharge from the ear. 



Otheoscope (p'-the-o-skdp) [w0fZv, to part ; am-eiv, to 

 view]. An instrument somewhat like a radiometer. 



Othydrops (o-thi' -drops) [ovc, ear; vtiponp, dropsy]. 

 Dropsy of the tympanic cavity. 



Othypersarcoma (p-thi-per-sur-ko' -muh) [ovc, ear ; 

 i~ip, above; aapi;, flesh; bua, tumor://., Othy- 

 persarcomata\ A fleshy outgrowth from the ear. 



Otiater (o'-te-a-ter) [oic, ear; inrr/p, surgeon]. An 

 aural surgeon. 



Otiatric (o-te-at'-rik) [ovc, ear; iari/p, surgeon]. Per- 

 taining to the treatment of diseases of the ear. 



Otiatrics (o-te-ut' -riks) [ovc, ear; iarr)p, surgeon]. 

 The study of diseases of the ear and their treatment. 



Otic (o'-tik) [utu6c, from ovc, ear]. Pertaining to 

 the ear. O. Ganglion. See Gunglion. O. Vesicle. 

 See / 'esicle. 



Oticodinia (o-tik-o-din'-e-uh) [utm6c, otic ; divoc, ver- 

 tigo]. Vertigo from disease of the ear; Meniere's 

 disease ; also, labyrinthine vertigo, as a symptom of 

 Meniere's disease. 



Oticodinosis (p-tik-o-din-o' -sis). See Oticodiniu. 



Otidium (o-tid'-eum) [ovc, ear; //., Otidia\ In 

 biology, the auditory organ or otocyst of the Mollusca. 



Otitis (o-ti'-tis) [ovc, ear; trie, inflammation]. Inflam- 

 mation of the ear. O., Catarrhal, catarrhal inflamma- 

 tion of the middle ear. O., Desquamative, a pro- 

 liferation and thickening of the epidermic layer of the 

 external auditor} - canal and the tympanic membrane. 

 The epithelium becomes desquamated and lies in the 

 canal. O., Diphtheric, a pseudo-membranous in- 

 flammation of the middle ear, sometimes also of the 

 external canal, due to extension of diphtheria from 



