| 释义 |
sebaceous, a.|sɪˈbeɪʃəs|
Also 9 sebacious.
[f. L. sēbāce-us, f. sēb-um tallow: see -aceous.]
1. Pertaining to, of the nature of, or resembling tallow or fat; oily, greasy.
1783Phil. Trans. LXXIII. 240 The sebaceous substance generally called Spermaceti. 1838Penny Cycl. XI. 52 Gallinæ..Body sebaceous, muscular, delicate. 1859R. F. Burton Centr. Afr. in Jrnl. Geog. Soc. XXIX. 85 The sebaceous odour of the skin amongst all these races is overpowering. 1894A. Morrison Mean Streets 176 His face was a sebaceous trickle of long features.
†b. sebaceous acid = sebacic acid. Obs.
c1789Encycl. Brit. (ed. 3) IV. 593/2 The metal [lead] is precipitated by sebaceous acid from the nitrous, in white needle-like crystals, easily soluble in water.
2. Physiol.
a. Having the nature or characteristics of sebum; as sebaceous humour, sebaceous secretion, etc.
1747tr. Astruc's Fevers 104 But why this sebaceous humour should be augmented in this case,..I will not undertake to answer at present. 1878A. Gamgee tr. Hermann's Hum. Phys. 158 The sebaceous secretion is closely allied to..milk. 1899Allbutt's Syst. Med. VI. 100 A dirty yellowish fluid containing..a large quantity of solid sebaceous material.
b. Connected with the secretion of sebum; as sebaceous crypt, sebaceous duct, sebaceous follicle, sebaceous gland, etc.
1728Chambers Cycl. s.v. Gland, Sebaceous glands. 1831R. Knox Cloquet's Anat. 309 It [axilla] is filled with sebaceous follicles which furnish an excretion, having a strong smell, and more or less coloured. a1843J. F. South in Encycl. Metrop. (1845) VII. 186/2 In many animals there are cavities or sacs of some size, upon the sides of which the sebaceous ducts open. 1870H. A. Nicholson Man. Zool. lxxvii. (1875) 615 In all the Deer there is a sebaceous gland, called the ‘lachrymal sinus’, or ‘larmier’, which is placed beneath each eye, and secretes a strongly-smelling waxy substance. 1876Van Beneden's Anim. Parasites 134 Another interesting acarus, which is developed in man in the sebaceous crypts of the nostrils.
3. Path. Of a cyst, tumour: Formed upon a sebaceous gland.
1872Bryant Pract. Surg. lx. 652 The external labia may also be the seat of sebaceous tumours. 1876Duhring Dis. Skin 124 Sebaceous cyst appears as a..roundish, more or less prominent tumor having its seat in the skin.
4. Bot. (See quots.)
1899Heinig Gloss. Bot. Terms, Sebaceous, containing or secreting oily or fatty matter. 1900B. D. Jackson Gloss. Bot. Terms, Sebaceous, like lumps of tallow. [So mod.L. sebaceus in Henslow Gloss. Bot. Terms, 1856.] |