| 释义 |
medullary, a.|mɪˈdʌlərɪ, ˈmɛdələrɪ|
[ad. late L. medullāris: see prec. and -ary2.]
1. Anat. Of, pertaining to, of the nature of, or resembling marrow. Also, pertaining to the medulla or central portion (of an organ or structure); occasionally, pertaining to the medulla oblongata.
1677Plot Oxfordsh. 302 His assigning..the Medullary [sc. part of the brain], or Corpus callosum, for the operations of the Phantasie. 1704J. Harris Lex. Techn. I, Medullary Oil, is the finer and more subtile part of the Marrow of the Bones. 1715Cheyne Philos. Princ. Relig. i. vi. §43 That Medullary Substance, that runs down its Cavity. 1748Hartley Observ. Man i. i. 7 The Nerves arise from the medullary, not the cortical Part, every-where, and are themselves of a white Medullary Substance. 1828Fleming Hist. Brit. Anim. 553 The whole colour [of a mollusc] is pink, with a dark medullary band. 1847–9Todd's Cycl. Anat. IV. i. 233/1 The kidneys of reptiles..have no distinction of cortical and medullary substance. 1871Tyndall Fragm. Sci. (1879) II. xiv. 352 The human organism is provided with long whitish filaments of medullary matter. 1878Bell tr. Gegenbaur's Comp. Anat. 42 The medullary tube or spinal cord [in Vermes]. Ibid. 512 The primitive medullary cavity..remains open in the lumbar swelling of Birds. 1878tr. H. von Ziemssen's Cycl. Med. XIII. 863 Diseases which are proper to each occur in the medulla [oblongata]. This gives the medullary pathology a very varied character. 1886Buck's Handbk. Med. Sci. III. 174/1 As the medullary groove deepens, its edges become more sharply defined.
b. Pertaining to the medulla of hair.
1844Carpenter Hum. Phys. (ed. 2) 550 Most Human hairs consist of two distinct substances; an external, cortical, hard, and fibrous part; and an internal, medullary, granular portion. 1862H. Macmillan in Macm. Mag. Oct. 462 The medullary portion, or pith of the hair.
c. Path. An alternative epithet for encephaloid or soft cancer or sarcoma.
1804Abernethy Surg. Observ. Tumours (1816) 57 The disease is usually of a pulpy consistence; and I have, therefore, been induced to distinguish it by the name of medullary sarcoma. 1852Jas. Miller Pract. Surg. (ed. 2) vi. 139 The medullary and malignant nasal polypi may be regarded as incurable. 1870T. Holmes Syst. Surg. (ed. 2) I. 564 Medullary cancer at first spreads chiefly through the loose cellular tissue.
2.
†a. Pertaining to the soft internal substance or pulp (of plants). Obs.
b. Bot. Of, relating to, or connected with the pith of plants. medullary ray: one of the wedge-shaped cellular processes which divide the vascular bundles and connect the pith with the bark in exogens. medullary sheath: see quot. 1849.
1620Venner Via Recta (1650) 133 The pulp or medullary substance of the Orange is not good to be eaten. 1812J. Smyth Pract. of Customs (1821) 69 Colocynth, is the dried medullary part of a..Gourd. 1830Lindley Nat. Syst. Bot. Introd. 19 Plates of cellular tissue..called medullary rays. 1849Balfour Man. Bot. §76 The Medullary-Sheath, is the fibro-vascular layer immediately surrounding the pith. 1882Encycl. Brit. XIV. 553/2 The rest of the thallus consists of the medullary system.
†3. transf. Pertaining to the inner part of a mineral formation. Obs.
1778Pryce Min. Cornub. 79 Thus, the medullary or inner part of a Fissure, in which the Ore lies, is all the way environed and bounded by two walls or coats of Stone.
†4. fig. Pertaining to the ‘marrow’ or inmost nature of something. Obs.
1651Biggs New Disp. ⁋198 This indication is peculiar, naturall, medullary, and intirely proper to it. |