单词 | ossicle |
释义 | ossiclen. 1. Anatomy and Zoology. a. Any of the small bones of the middle ear (the malleus, incus, and stapes). ΚΠ 1578 J. Banister Hist. Man i. f. 10v Let us a little discourse [of] the Ossicles, & little bones of the Auditorie organ. 1668 Philos. Trans. (Royal Soc.) 3 666 It was beyond the activity of the mucle and Curviture of the Ossicles to give it a due Tension. 1712 Philos. Trans. 1710–12 (Royal Soc.) 27 125 The Ossicles, viz. the Malleolus..Incus..Stapes..are of a proportional bigness. 1835–6 Todd's Cycl. Anat. & Physiol. I. 308/2 The..tympanic ossicle is moved by one muscle. 1925 Proc. National Acad. Sci. U.S.A. 11 439 The dynamical function of the tympanic membrane and its associated ossicles. 1994 W. Maples & M. Browning Dead Men do tell Tales x. 144 Just imagine, in a set of cremains, finding an ossicle, the tiny bone from the inner ear of an infant, intact. b. Any of various other small bones; esp. (a) any of the bones of the carpus or tarsus; (b) any of the tiny bones found in the sclera of the eye in birds and some reptiles.Weberian ossicle: see Weberian adj.2 ΘΚΠ the world > life > the body > structural parts > bone or bones > types of bones > [noun] ossicle1578 ossiculum1578 sucking-bone1648 master-bone1677 key-bone1791 bonelet1833 bladelet1859 interhaemal1880 1578 J. Banister Hist. Man i. f. 25 As touchyng the Ossicle, or litle bone conteined within the hart. 1599 A. M. tr. O. Gaebelkhover Bk. Physicke 18/2 Take out..of each foote the middlemost ossicle, or Clawe. 1686 J. Moyle Abstr. Chirurgiæ Marinæ ii. iv. 37 A Turk had been wounded..by a brace of Bullets that had been shot through his Arm extreamly shattering both bones Vlna and Radius... And (when at the request of a Merchant) I had laid it open, and taken out the splintred ossicles, the Turk healed it himself. 1840 R. Owen in Rep. Brit. Assoc. 1839: Rep. State Sci. 116 The anterior digital series includes, counting from the tibia, nine ossicles. 1877 E. Coues & J. A. Allen Monogr. N. Amer. Rodentia (U.S. Geol. Surv. Territories, vol. XI) 582 There are eight true tarsal bones, besides a supplementary ossicle. 1959 J. Van Tyne & A. J. Berger Fund. Ornithol. iv. 109 Imbedded in the sclera are a sclerotic ring,..and, in some birds, an os opticus (‘Gemminger's ossicle’). 1968 Brain 91 661 The centrum of the pro-atlas (occipital vertebra) can occasionally be seen in man as a small, completely separate central ossicle, lying between the tip of the dens and the foramen magnum. 1996 Q. Rev. Biol. 71 478/2 The ossicles constitute an overlapping ring of tiny scale-like bones that are embedded in the sclera at the limbus of the eye. 2. Zoology. A small calcified or hardened plate, segment, etc., in an invertebrate; esp. (a) each of the calcareous plates forming the skeleton of an echinoderm; (b) each of the disc-shaped segments of the stalk, cirri, arms, and pinnules of a crinoid; (c) each of the small hard thickenings of the chitinous wall of the cardiac chamber of a malacostracan crustacean. ΘΚΠ the world > animals > animal body > general parts > constituent materials > [noun] > skeleton > small plate in skeleton ossicle1852 1852 E. Forbes Echinodermata of Brit. Tertiaries 2 Vent..surrounded by a membrane covered more or less with irregular ossicles. 1857 R. G. Mayne Expos. Lexicon Med. Sci. (1860) Ossicularis,..having the form, appearance, the nature or character nature of ossicles, as the articulated pieces of which are composed the columns of animals pertaining to the Crinoides. 1892 J. A. Thomson Outl. Zool. 204 [In starfishes] the rafter-like plates are called ambulacral ossicles. 1892 J. A. Thomson Outl. Zool. 238 The [crustacean cardiac] mill is very complex;..there are supporting ‘ossicles’ on the walls with external muscles attached to them. 1926 Philos. Trans. (Royal Soc.) B. 214 304 The epiphyses correspond to the first ambulacral ossicles. 1960 D. C. Braungart & R. Buddeke Introd. Animal Biol. (ed. 5) viii. 108 In the starfish..we find an organism with a true skeleton. The calcareous ossicles that compose it are derived from the mesoderm, but since it lies just beneath the epidermis and encloses and protects the visceral organs it is sometimes called a dermal exoskeleton. 1971 I. G. Gass et al. Understanding Earth xii. 159 (caption) Polished block of limestone..showing stem ossicles of fossil sea-lilies, crinoids. 1994 E. E. Ruppert & R. D. Barnes Invertebr. Zool. (ed. 6) xiv. 710/1 Certain ossicles give rise internally to a median dorsal tooth and to two lateral teeth. This entry has been updated (OED Third Edition, September 2004; most recently modified version published online June 2022). < n.1578 |
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