OCULATE 



886 



ODONTOBLAST 



field-lens and a double eye -lens. O. Sheath, the 

 loose sheath-like tissue extending from the apex of 

 the orbit of the eye to the vertical diameter of the 

 globe, the posterior part of which up to the pas- 

 sage of the tendons of the external ocular muscles 

 is called the Capsule of Bonnet, and the anterior 

 portion, the Capsule of Tenon. O., Solid, an eye- 

 piece devised by Tolles. It consists of a solid piece 

 of glass, with a moderate curvature at one end for a 

 field-lens, and more greatly curved at the other end for 

 use as an eye-lens. For a diaphragm a groove is cut 

 transversely at the proper level and filled with black 

 pigment. 0., Spectral, an ocular with a direct-vision 

 spectroscope connected with it. See Micro-spectro- 

 scope. O., Spectroscopic. See O. , Spectral and 

 Micro-spectroscope. O. Spot, a differentiated pig- 

 mented organ having the function of sight, found 

 among the Protozoa, chiefly in the Flagellata, e.g., 

 Euglena (pretty eye) ; the Colenterafces (Santa) ; Ac- 

 tinozoa [Actinia), Asteridea, Echinidea, Rotifera, Tre- 

 matoda, and Nematoda. O. Vesicle. See Vesicle. 

 O., Working, an ocular used for ordinary microscopic 

 observation, in contradistinction to one of very low 

 power used for finding objects. There are both positive 

 and negative forms. 



Oculate (ok'-u-ldt) [oculus, an eye]. In biology, hav- 

 ing eyes or eye-shaped markings. 



Oculauditory (ok-u-law' '-dit-or-e) Xocuhis, eye ; audire, 

 to hear]. In biology, combining the functions of eye 

 and ear, as the marginal bodies or sense-organs of 

 certain invertebrates. 



Oculiferous (ok-u-lif'-er-us) \oculus, eye ; ferre, to 

 bear]. In biology, eye-bearing; applied to the eye- 

 stalks of a crustacean or snail. 



Oculiform (ok' -u-liform) \_oculns, eye ; forma, shape]. 

 In biology, resembling an eye. 



Oculigerous (ok-u-lif -er-us) \oculus, eye ; gerere, to 

 carry]. Same as Oculiferous. 



Oculist (ok'-u-list). Synonym of Ophthalmologist. 



Oculo- (ok'-u-lo-) \oculus, eye]. A prefix signifying 

 relation with the eye. O. -motor, moving the eye. 

 O.-muscularis, pertaining to the muscles of the eye. 

 O. -pupillary, pertaining to the pupil of the eye. 0.- 

 zygomatic, pertaining to the eye and the zygoma. 

 See Jadelof s Lines. 



Oculomotorius [ok' ' -u-lo-mo-to' '-re-us) \oadus, eye ; 

 movere, to move]. The third, or motor oculi, nerve. 

 See Nerves, Table of 



Oculus (ok'-u-lus) [L. , an eye : //. , Oculi ] . In biology, 



. an eye or leaf-bud, e. g. , in the potato. O. bili. See 

 Tabasheer. O. bovinus, O. bovis. Synonym of 

 Hydr ophthalmia. O. bubulus. Synonym of O. 

 bovinus. O. csesius, glaucoma. O. elephantinus. 

 Synonym of Hydrophthalmia. O. lacrimans, epi- 

 phora. O. leporinus, lagophthalmos. O. mundi. 

 See Tabasheer . 



Ocyodinic (o-se-o-din'-ik) [unug, swift ; IxVig, to avail]. 

 Oxytocic ; hastening the delivery of the fetus. 



Ocyphonic, Ocyphonous (o-sifon'-ik, o-sif'-on-us) 

 [w«?'c, swift; (j>6vor, slaughter]. Killing quickly. 



Ocytocic, Oxytoceous(<w-//-M' / -?,£, oks-it-os' '-e-us)\_coKvg, 

 swift; t6koc, birth; labor]. Hastening the process of 

 childbirth ; oxytocic. 



Od (od or od) [an arbitrary name given by Baron von 

 Reichenbach]. The supposititious force producing 

 the phenomena of mesmerism. 



Odaxesmus (o-dahs-ez'-mus)l_b^a^r/a/i6g, a sharp biting]. 

 The biting of the tongue, lip, or cheek, occurring 

 during an epileptic fit. 



Odaxetic (o-daks-et'-ih) [bfia!;7}TtK6g , biting]. Giving 

 rise to an itching or stinging sensation. 



Odd-pinnate (odpin'-at) [ME., od, odd; pinna, a 



wing]. In biology, pinnate, with a terminal odd 

 leaflet ; imparipinnate. 



-ode, -odes (-od, -o'-dez) [wrfe, like]. A suffix denoting 

 likeness. 



Odinagogue (o-din'-ag-og). Synonym of Oxytocic. 



Odinolyontous (o-din-ol-e-on'-tus) [wrf/c, pain ; '/.ittK 

 to lose]. Soothing. 



Odinopean (p-din-o' '-pe-an) [o>6ig, pain ; rrouir, to 

 make] . Causing pain. 



Odont- (o'-dont-). See Odonto-. 



Odontagma (o-don-tag'-mah) [bdovg, tooth ; ayvvvai, 

 to break]. Same as Odontoclasis. 



Odontagra (o-don -ta'-grah) [bdovg, tooth ; aypa, seiz- 

 ure]. Toothache; also, a kind of forceps for the 

 surgical removal of teeth. 



Odontalgia (o-don-tal' -je-ah) [bdovg, tooth ; 



pain]. Toothache. O. nervosa, neuralgic tooth- 

 ache. 



Odontalgic (o-don-tal' -Jih) [bfiofg, tooth ; aXyog, pain]. 

 I. Anti-odontalgic. 2. Relating to toothache. 3. 

 A remedy for toothache. 



Odontalgy (o-don-tal' -je). Same as Odontalgia. 



Odontalite (o-don' -tal-it) [0601%, a tooth ; XWog, a 

 stone]. A petrified tooth. 



Odontapotribe, Odontapotripsis (o-don-tap'-o-trfi, 

 o-don-tap-o-trip' -sis) Xbbovg, tooth ; cnro, from ; rpi letv, 

 to crush]. Wearing away of the surface of the teeth. 



Odontatrophy (o-don-taf -ro-fe) [odorc, tooth , dry 

 atrophy]. Atrophy of the teeth. 



Odontelephas (o-don-tel'-efas). Synonym of Den tine. 



Odonteuros (o-don-tu'-ros) [orfofc, tooth; tvpiog, decay]. 

 Dental caries. 



Odontharpagra (o-don-thar-pa'-grah). Synonym of 

 Dentagra. 



Odonthercos (o-don-ther' -kos) [bdovg, tooth ; 

 fence]. A set of teeth. 



Odonthyalophthora (o-dont-hi-al-off ' -t)ior-ah) [ 

 tooth; valoq, glass; (pdelpeiv, to destroy]. Destruc- 

 tion of the enamel of the teeth. 



Odonthyalus (o-dont-hi' -al-tts). Synonym of Enamel 



Odontia (o-don' -she-ah) [bfio'vg, tooth]. Odontalgia. 

 O. deformis, deformity of the teeth, arising either from j 

 error of shape, position, or malformation of the jaws 

 or alveolar border. O. incrustans, tartar of the 

 teeth. 



Odontiasis (o-don-ti'as-is) [Wovndv, to cut teeth]. • 

 Dentition. The cutting of teeth. 



Odontiater (o-don-te-a' -ter) [otJoi'c, tooth ; \arp6q, phy- 

 sician]. A dentist. 



Odontiatria (o-don-te-a-tre' -ah) \060vc, tooth ; la 

 a healing]. Dental surgery. 



Odontic (o-don' -tik) [orfoi'f, tooth]. Appertaining to i 

 the teeth. 



Odontinoid (o-don' -tin-oid) \060ve, b66vrog, tooth ; 

 ehfog, resemblance]. Resembling or having the natun 

 of teeth. 



Odontitis (o-don -ti '-lis) [b(hi>g, tooth; trig, inflamma 

 tion]. Dentium inflanmiatio ; inflammation ol 

 teeth. Formerly a synonym of dental caries, wliei 

 this affection was supposed to be an inflammatii 

 "the dentine. 



Odonto- (o-don'-to-) [bfiovg, gen. b(Uvrog, a tooth]. Ai 

 prefix that signifies resemblance to, connection 

 or relation to a tooth. 



Odontoblast (o-don' -to-blast) [b<hl g, tooth. 

 germ]. In biology, one of the formative ce 

 dentine; one of the columnar cells forming the out 

 layer of the pulp of teeth ; they do not enter into th 

 dentine which they have secreted (as do osteobus 

 into bone), but they all remain at its base and 

 into it numerous finely-branched processes, which W 

 parallel to each other in as many little channels 



