| 释义 |
albumen|ælˈbjuːmɪn|
[a. L. albūmen (albumin-) white of an egg, f. albus white.]
1. The white of an egg.
1599A. M. tr. Gabelhouer's Bk. Physic 52/1 Take..the Albumen of 4 Egges. 1753Chambers Cycl. Supp. s.v., There is most albumen in the obtuse end of an egg. 1869Huxley in Fortn. Rev. Feb. 135 The white or albumen of an egg.
2. The substance which exists nearly pure in the white of an egg, and forms a constituent of animal solids and fluids, and of the tuberous or fleshy roots, and seeds of plants. See albumin.
1800Henry Epit. Chem. (1808) 304 The white of an egg affords a good example of animal albumen. 1822J. Imison Sci. & Art II. 138 Albumen is the principle constituent of the serum of blood. 1858Carpenter Veg. Phys. §32 These compounds,..gluten, fibrin, albumen, caseine, etc., form the basis of all vegetable and animal tissues.
3. Bot. The substance interposed between the skin and embryo of many seeds, of which it usually constitutes the eatable part. It varies greatly in consistency and amount, and is sometimes entirely wanting.
1677Grew Anat. Plants iv. iii. §9 The Albumen or clear Liquor out of which they are bred. 1830Lindley Nat. Syst. Bot. Introd. 32 The substance which surrounds the embryo is called the Albumen. 1857Henfrey Elem. Bot. §298 The body of the seed is composed either of the embryo alone, or of the embryo imbedded in a mass of tissue, called the endosperm, perisperm, or albumen.
4. attrib. Designating a photographic paper or plate coated with albumen; also denoting a process using such a paper or plate.
1856R. Howlett Methods Printing Photogr. Pict. 7 The Albumen Process. The most simple process for obtaining positive prints is that upon albumenized paper. 1867Sutton & Dawson Dict. Photogr. 126 This consists in subjecting sensitised albumen-paper to the fumes of ammonia. 1889Internat. Ann. Anthony's Photogr. Bull. II. 403 The albumen paper asserts its old place in the photographic galleries. Ibid., The clearness..of the albumen pictures. |