oto-
before a vowel ot-, a. Gr. ὠτο-, combining form of οὖς, ὠτ- ear, an element of medical and other scientific words, the more important of which appear in their alphabetical places.
otocaˈtarrh, catarrh of the ear (Mayne Expos. Lex. 1857). otoˈconia [F. otoconie (Breschet); Gr. κονία or κόνις dust], term for the white pulverulent dust found in the membranous labyrinth of the inner ear, the aggregation of which forms an otolith. (Sometimes treated as if pl. of otoconium; also in Eng. form otokonies.) Hence otoˈconial a.; oˈtoconite = otolith. ˈotocrane [Gr. κρανίον the skull], the auditory capsule, the portion of the petrous bone which encloses the organ of hearing; hence otoˈcranial, otoˈcranic adjs. ˈotocyst [F. otocyste (Lacaze Duthies), f. Gr. κύστις bladder], term for the auditory vesicle or organ of hearing in some of the Invertebrata; hence otoˈcystic a., of or connected with an otocyst. ‖ otoˈdynia [Gr. ὀδύνη pain], ear-ache; hence otoˈdynic a. (Mayne). oˈtography [-graphy], description of the ear (Dunglison Med. Lex. 1842); hence otoˈgraphical a. otomorˈphology, the morphology of the ear. ‖ otomyˈcosis [mycosis, Gr. µύκης fungus], the presence of parasitic fungi in the external auditory meatus. oˈtopathy [Gr. πάθος suffering], disease of the ear (Dunglison 1853); hence otoˈpathic a. ˈotophone [Gr. ϕωνή sound], an ear-trumpet, an apparatus for the conveying of sound to the deaf; also = otoscope 1. ˈotoplasty [Gr. πλάσσειν to mould], plastic surgery of the ear; hence otoˈplastic a. (Mayne). ‖ ˌotopyˈosis [Gr. πύωσις formation of pus], suppuration in the ear. ‖ otoˈrrhœa [Gr. ῥοία a flow], purulent discharge from the ear; hence otoˈrrhœal, otoˈrrhoic adjs., relating to otorrhœa. ‖ otoˈsalpinx [Gr. σάλπιγξ war-trumpet], the Eustachian tube. oˈtosteal [Gr. ὀστέον bone] a., relating to the auditory ossicle; n., applied by Owen to the homologues of the bones of the inner ear, in fishes, etc. oˈtotomy [-tomy], dissection of the ear (Dunglison, 1843). otoˈtoxic a., having a toxic effect on the ear or its nerve supply; so ˌototoˈxicity, the property of being ototoxic.
| 1855 Holden Hum. Osteol. (1878) 278 The two masses are the ‘*otoconia’ or ‘otoliths’. 1881 Mivart Cat 301 Two sacs connected by a narrow bent tube and containing within them small crystals of carbonate of lime, called otoliths, or otoconia. |
| 1842 E. Wilson Anat. Vade M. (ed. 2) 472 The membranous labyrinth..contains two small calcareous masses called *otoconites. |
| 1854 Owen Skel. & Teeth in Circ. Sc., Organ. Nat. I. 171 The organ of hearing,..the surrounding vertebral elements being modified to form the cavity for its reception, which is called ‘*otocrane’. 1872 Mivart Elem. Anat. 138. |
| 1857 Mayne Expos. Lex., *Otocranial, of or belonging to the otocrane. |
| 1877 Huxley Anat. Inv. Anim. iv. 189 In some there is a sac filled with calcareous matter (*otocyst?) attached to the ganglion. 1878 Bell Gegenbaur's Comp. Anat. 533 The primitive otocyst is the foundation of a complicated cavitary system. |
| 1880 E. Ray Lankester in Nature XXII. 147 The presence of velar *otocystic canals constitutes the chief peculiarity of the genus Craspedacusta. |
| 1836–9 Todd Cycl. Anat. II. 567/2 *Otokonies..found in the sacculus vestibuli of the ears of Cephalopods. |
| 1900 Miss Ellis Human Ear 42 As otology is a medical term for the science of the ear, we should prefer to use the new word (suggested by Dr. R. Garnett) *otomorphology, the science of the shape of the ear. |
| 1877 Burnett Ear 284 *Otomycosis is said to be much more frequently met among the poorer classes. |
| 1839 D. J. Moriarty Husband Hunter II. 109 Perceiving the *otophone properly fixed. 1888 Amer. Ann. Deaf Jan. 85 Examination of 15 deaf persons in the Pennsylvania Inst. by means of Maloney's Otophone. |
| 1818–20 Thompson tr. Cullen's Nosologia 302 Local Diseases..Of the Secretions and Excretions..*Otorrhœa. 1878 T. Bryant Pract. Surg. I. 89 Deafness is not unfrequent, the hearing failing without any external disease, such as otorrhœa. |
| 1877 tr. von Ziemssen's Cycl. Med. XII. 808 *Otorrhœal abscess of the brain. |
| 1857 Mayne Expos. Lex., *Otorrhoic. |
| 1854 Owen Skel. & Teeth in Circ. Sc., Organ. Nat. I. 177 A body as hard as shell, like half a split almond..it is the ‘*otosteal’..or proper ear-bone. 1868 ― Anat. Vertebr. III. 246 The otosteals conduct vibrations from the tympanic membrane to the vestibular one. |
| 1951 Trans. 10th Conf. Chemotherapy of Tuberculosis 224 The growing list of tuberculostatic antibiotics which have an *ototoxic action..suggests that still other substances derived from Streptomyces may be expected to show a similar toxicity. 1967 Busch & Lane Chemotherapy v. 86/2 The ototoxic effect is exerted primarily on the cochlear division of the 8th nerve. 1974 Arch. Path. XCVI. 304/1 Methyl mercury is a unique ototoxic agent. |
| 1951 Trans. 10th Conf. Chemotherapy of Tuberculosis 224 (heading) *Ototoxicity of hydroxystreptomycin. 1975 Nature 3 Jan. 45/1 Kanamycin ototoxicity yields such cochlear lesions that histological and audiometric measures are well correlated. |