| 释义 |
collodion|kəˈləʊdɪən|
Also collodium.
[mod. f. Gr. κολλώδ-ης glue-like (f. κόλλα glue); in the L. form collodium ‘a term of Paracelsus for some gluey substance’ (Mayne Expos. Lex.).]
A solution of gun-cotton in ether, forming a colourless gummy liquid, which dries rapidly in the air, owing to evaporation of the ether; used in photography for covering plates with a thin film, and in surgery for coating wounds, burns, etc.
1851F. S. Archer in Chemist 257, I find from numerous trials that Collodion..is admirably adapted for photographic purposes as a substitute for paper. 1859Proc. Amer. Phil. Soc. VII. 15 Photographs of the moon..taken..on collodion. 1878T. Bryant Pract. Surg. I. 35 An artificial covering of the flexible collodion is occasionally of..use.
b. attrib., as collodion process (in photography), collodion balloon.
1859Reeve Brittany 6 The wet collodion process. 1863–72Watts Dict. Chem. I. 1084 Collodion balloons may be made much lighter than those of gold-beater's skin, so that much smaller ones will rise in the air when filled with detonating gas. 1879G. B. Prescott Sp. Telephone 11 The smaller..end of the tube is closed by means of a collodion membrane. |