OSCEDO 



396 



OSTOID 



Braune's. See Band/, Ring of (Illus. Diet.). O. 

 leporinum, harelip. Ora serrata, the irregular wavy 

 margin of the retina at its end near the ciliary body. 



Oscedo (os-e'-do) [L.]. Yawning. 



Oscheoma (os-ke-o'-mah) [bax^ov, scrotum]. A scrotal 

 tumor. 



Oscillator {os'-il-a-tor) [oscillare, to swing]. An 

 apparatus for application of mechanical therapeutics. 



Oscillatoria malariae (os-il-a-to-'re-ah). The name 

 given by Richard, 1882, to the pigmented ameboid 

 bodies and flagellate organisms observed in the blood- 

 discs in cases of ague. 



Osier's Disease. See under Polycythemia. 



Osmometer. (See Illus. Diet.) An apparatus for 

 measuring the osmotic power of different fluids. 



Ossagen (os'-aj-en). A proprietary remedy used in 

 rickets, said to be the calcium salt of the fatty acids of 

 red bone-marrow. Dose, 2-4 gm. twice daily. 



Ossalin (os / -a/-in). A hygroscopic ointment base pre- 

 pared from bone-marrow. It occurs as a grayish fat 

 with the odor of tallow. Syn. , Adeps ostium. 



Ossalinate (os-al'-in-dt). A proprietary substitute for 

 cod-liver oil said to be the sodium compound of the 

 acid of ox marrow. 



Osseoalbumoid (os-e-o-al'-bn-moid). A proteid sub- 

 stance resembling elastin, and with properties similar 

 to those of chondroalbuminoid, obtained from bone 

 after hydration of the collagen. 



Osseoaponeurotic (os-e-o-ap-on-u-rot'-ih). Relating 

 to bone and the aponeurosis of a muscle. 



Osseomucoid {os-e-o-mu'-koid). A mucin discovered 

 in bone by Wm. J. Gies (1901). It has the elementary 

 composition C +7 . 07 H 6 . fi ,,N u . g8 S 2 . 4] O 31 . 85 . Cf. Chondro- 

 mucoid ; Tendomucoid. 



Ossicle. (See Illus. Diet.) O., Andernach's, the 

 wormian bones. O., Kerkring's, a point of ossifica- 

 tion in the occipital bone, immediately behind the 

 foramen magnum. O., Prenasal. See Bone, Pre- 

 nasal. O.s, Riolan's, small bones sometimes found 

 in the suture between the inferior border of the occipital 

 bone and the mastoid portion of the temporal bone. 



Ossiculectomy [os-ik-u-Uk '-lo-me) [ossiculum, a small 

 bone ; cutout], excision]. The excision of an ossicle 

 or of the auditory ossicles. 



Ossiculotomy {os-ik-u-lot' -o-me) [ossiculum, ossicle ; 

 rifiveiv, to cut]. Surgical incision of the ossicles of 

 the ear. 



Ossiculum. (See Illus. Diet.) Ossicula calcoidea, 

 the cuneiform bones of the foot. Ossicula epac- 

 talia, the wormian bones. O. hamuli, a horny 

 nodule in the trochlea near the ventral border of the 

 lacrimal groove. O. jugulare, one of frequent occur- 

 rence in the posterior lacerated foramen. O. lenti- 

 culare Sylvii, O. ovale (de Valsalva), O. quar- 

 tum. See Os lenticulare. Ossicula rhaphogemi- 

 nantia, the wormian bones. O. semilunare ( Trich- 

 meyer), O. squamosum, O. Sylvii. See Os lenti- 

 culare. O. tegmenti tympani cuneiforme, one 

 separated from the cuneiform process of the tegmen 

 tympani. Ossicula triticea, the lesser cornua of the 

 hyoid bone. 



Ostalgitis {os-tal-ji'-tis) [oa-iov, bone ; aAyog, pain]. 

 Inflammation of a bone attended by pain. 



Ostarthritis {os-tar-thri'-tis). See Osteoarthritis (Illus. 

 Diet.). 



Q'$\.zz\.ovc\y{os-tek' -to-me). See Osteectomy (Illus. Diet.). 



Osteitis. (See Illus. Diet.) O. fungosa, a simple 

 inflammatory hyperplasia of the medulla and of the 

 compact substance of bone characterized by fungoid 

 granulations and leading to new ossification or de- 

 structive chronic inflammation. Syn., A/y, •litis l/yper- 

 plastica granulosa. O., Hypertrophic Pneumic. 



See Osteoarthropathy, Hypertrophic Pulmonary (Illus. 

 Diet.). O. interna, a form of osteitis occurring deep 

 in the bone. Syn., Caries centralis. 



Osteoarthropathy. (See Illus. Diet.) O., Hyper- 

 trophic Pneumic, O., Pulmonary. Same as O., 

 Hypertrophic Pulmonary (Illus. Diet.). 



Osteocachexia {os-te-o-kak-eks 1 '-e-ah). Cachexia due 

 to disease of the bones. 



Osteochondritis. (See Illus. Diet.) O., Syphilitic, 

 Wegner's term for a peculiar condition of the bones in 

 congenital syphilis. It forms a thick layer, dense anc 

 homogeneous, but friable, white, and opaque, like 

 mortar ; usually at the meeting-lines between the shafts 

 of the long bones and their epiphyseal cartilages. The 

 lower end of the femur is the favorite seat. 



Osteochondrophyte (os-te-o-fcon'-dro-fit). A bone 

 tumor in which the proportions of bone and cartilage 

 are nearly equal. Syn., Echondroma, Osteoid. 



Osteochondrosarcoma {os-te-o-kon-dro-sar-ko'-mah). 

 An osteochondroma with sarcomatous features. 



Osteocranium (os-te-o-kra'-ne-um) [boreov, bone 

 Kpaviov, cranium]. The ossified cranium as distin 

 guished from the chondrocranium. 



Osteocystoid. (See Illus. Diet.) 2. See Osteocys 

 (Illus. Diet.). 



Osteofibrolipoma (os-te-o-fi-bro-lip-o / -mah). A tumc 

 made up of bony, fibrous, and fatty elements. 



Osteofibroma (os-le-o-Ji-bro' '-mah). A combined oste 

 oma and fibroma. 



Osteogenesis. (See Illus. Diet.) O. imperfecta 

 a condition characterized by shortness of the extrem 

 ities with well-developed head and trunk. There i 

 incomplete development of the bone-centers of the heac 

 and face and imperfect ossification of the long bones 

 Cf. Chondrodystrophy. 



Osteoid. (See Illus. Diet.) 2. An osteoma. 



Osteolipochondroma {os-te-o-lif-okon-dro'-mah 

 [boreov, bone; aikoc, fat; x6vfipo£, cartilage]. A 

 chondroma with osseous and fatty elements. 



Osteolysis (os-te-ol'-is-is) [boreov, bone ; "kieiv, to 

 loose]. Bone degeneration. 



Osteoma. (See Illus. Diet. ) O., Cavalryman's, one 

 occurring at the insertion of the adductor muscle o 

 the thigh. 



Osteopathia, Osteopathy. (See Illus. Diet.) 2. A 

 system of healing devised by A. T. Still, based on the 

 idea that all disease is due to misplacement of bones 

 pressing upon nerves, muscles, etc. O., Bamberger's 

 Type of Hypertrophic Pulmonary, a form in which 

 painful' thickenings of the long bones, especially of the 

 forearm and leg, are a prominent symptom. O 

 hemorrhagica infantum. See Disease, Barlow's. 



Osteostixis (os-te-o-s/ihs'-is) [boreov, bone ; orii-ic, 

 pricking]. Surgical puncturing of a bone. 



Osteosuture (os-te-o-su'-chur). See Osteorrhaphy (Illus 

 Diet ). 



Osteosynovitis [os-te-o-si-no-vi' -tis). Synovitis com 

 plicated with osteitis of adjacent bones. 



Osteotabes (os-te-o-ta'-bez) [bareov, bone ; tabes']. Bone 

 degeneration of infants beginning with the destructioi 

 of the cells of the lymphoid or splenoid bone marrow, 

 which disappears completely in parts and is replaced 

 by soft gelatinous tissue ; later the spongy bone 

 diminishes, and lastly the compact bone. Cf. Disease^ 

 Barloio 1 s. 



Osteotympanic {oste-o-tim' -pan-ik). See C>aniotym- 

 panic. 



Ostiary (os-te-a'-re) [ostium, a mouth]. Relating to 

 an opening or orifice ; ostial. 



Ostoembryon {os-to-em'-bre-on). See Lithopeditm 

 (Illus. Diet.). 



Ostoid {os'-toid). See Osteoid (Illus. Diet.). 



