单词 | fluate |
释义 | fluaten. Now historical. 1. Chemistry. A salt made by combining fluoric (hydrofluoric) acid with a base; a fluoride. fluate of lime n. calcium fluoride, fluorite. ΘΚΠ the world > matter > chemistry > chemical substances > salts > [noun] > salts named by atomic number > haloids > fluorides fluate1788 hydrofluate1841 1788 J. St. John tr. L. B. Guyton de Morveau et al. Method Chym. Nomencl. 125 Fluats. Salts formed by the fluoric acid, combined with different bases. 1789 R. Kerr tr. A. Lavoisier Elements Chem. 240 Fluor spar, or fluat of lime, is put into a leaden retort, with..sulphuric acid. 1800 Philos. Mag. 8 282 Bergman obtained fluate of silex in a crystallized form. 1806 R. Patterson Adams's Lect. Nat. & Exper. Philos. (rev. ed.) I. App. 546 Fluats—when heated, phosphoresce. 1849 M. Somerville On Connexion Physical Sci. (ed. 8) xxv. 243 Limpid and colourless fluate of lime. 1883 U.S. Patent 273,588 1/2 For the purposes of my invention I prefer to use fluoride (fluate) of ammonium; but I may use fluoride (fluate) of potassium. 1960 Proc. Royal Soc. A. 255 169 By analysing calcium fluate and potassium fluate he [sc. Humphry Davy] arrives at a number, about 33, for fluorine. 2003 Times (Nexis) 24 Dec. 8 Other small boxes [in Captain Scott's chemistry set] are labelled with more exotic chemical names, such as lime fluate, lycopodium..and red lead. 2. Also with capital initial. A preparation of fluosilicates applied as a solution to building stone in order to harden and improve its surface. Cf. fluatation n. ΚΠ 1887 Minutes Proc. Inst. Civil Engineers 90 467 The salts..affording the most satisfactory results are the fluosilicates, or, for brevity, the fluates, of certain metals. Messrs. Faure and Kessler of Clermont, specially recommend the fluosilicates of magnesium, zinc, and aluminium, or the double fluosilicates of two of them. 1904 Technics 2 384/2 A preparation known as ‘Fluate’, sold by the Bath Stone Firms, Limited, has proved itself to be a real preservative, and makes the surface to which it is applied damp-proof. 1957 Stud. in Conservation 3 9/2 It is often necessary to destroy the growth [of moss and lichen] by an application of fluate. 2010 R. Griffith-Jones in R. Griffith-Jones & D. Park Temple Church London 214 In 1895..Bloomfield recommended the removal of loose powdery stone and treatment with ‘Fluate’. This entry has been updated (OED Third Edition, March 2012; most recently modified version published online March 2022). fluatev. Now rare. transitive. To treat (stone) with fluosilicates in order to harden and improve its surface. Cf. fluate n. 2. ΚΠ 1887 Sci. Amer. 28 May 344/3 After the stone has been once fluated, it becomes so hard that it can be treated like marbles and porphyries. 1932 Brit. Patent 369,807 1/2 After the material has been applied, for instance as plaster to a wall, it is fluated in the usual manner. Derivatives fluˈating n. ΚΠ 1891 Building News 25 Sept. 427/1 Fluating reduces the absorption by capillary attraction of the open-grained stones by one-half. 1961 New Scientist 12 Jan. 92/2 During fluating the surface to be protected is treated with a fluoride..which reacts with the free lime to form a layer of calcium fluoride. This entry has been updated (OED Third Edition, March 2012; most recently modified version published online March 2022). < n.1788v.1887 |
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