| 释义 |
opacify, v.|əʊˈpæsɪfaɪ|
[f. opacity + -ify; cf. F. (s')opacifier.]
a. trans. To render opaque.
1940Chem. Abstr. XXIV. 4268 (heading) Paper opacified with calcium carbonate. 1955P. D. Trevor-Roper Ophthalm. xxiii. 413 Post-operative uveitis may opacify the posterior corneal layers. 1957S. D. Gershon et al. in E. Sagarin Cosmetics xxiv. 615 Initially, cold-waving lotions were marketed as transparent liquids. Shortly thereafter, the advantage of marketing an opaque liquid, the milkiness connoting richness and gentleness, became evident. As a result, practically all marketed waving lotions were opacified. 1971Country Life 6 May 1084/1 Milk-white glass opacified with arsenic displays a fiery opalescence if held to the light.
b. intr. To become opaque.
1954S. Duke-Elder Parson's Dis. Eye (ed. 12) ii. 24 If either of these membranes [of the cornea] is disrupted, fluid is absorbed and the tissue opacifies. 1967Amer. Jrnl. Roentgenology C. 410/2 The fluid-filled fundus of the stomach..opacifies during abdominal aortography. 1971Nature 12 Mar. 120/2 Corneas rapidly opacified and swelled with the first enzyme digestion after the initial irradiation.
So oˈpacified ppl. a., oˈpacifying ppl. a. and vbl. n.
1914Chem. Abstr. VIII. 224 The opacifying effect of the metallic oxides of Sn, Zr, Ti and Al..utilizable for white enamels. 1947Endeavour VI. 117 The opacifying agent dissolves, leaving the glass transparent while molten, but causing it to become opaque upon cooling. 1954Amer. Jrnl. Roentgenology LXXII. 592/1 In the later films the liver seems to be more opacified..than the spleen. 1963Times 25 May 11/4 These enamels were produced by fusing what amounted to opacified glass on to wafer-thin copper. 1973Sci. Amer. Oct. 128/1 A talc base will often be augmented with an opacifying pigment such as zinc oxide or titanium dioxide. |