| 单词 |
clathrate |
| 释义 |
▪ I. clathrate, a.|ˈklæθreɪt|
[ad. L. clāthrāt-us, pa. pple. of clāthrāre: see next.]
a. Bot. Resembling lattice-work; cancellate.
Webster cites Gray.
b. Chem. Designating or relating to a molecular compound in which one component is enclosed within the crystals or structure of another.
1948H. M. Powell in Jrnl. Chem. Soc. 63 It is suggested that the general character of this type of combination should be indicated by the description ‘clathrate’ compound. 1961New Scientist 16 Feb. 409/3 Under pressure at 2° C, propane forms insoluble ‘clathrate’ crystals in which one molecule of propane is caged by 17 molecules of water.
▸ n. Chem. A clathrate compound.
1948Science 29 Oct. 459/1 Perhaps the most striking of Powell's recent analyses has been that of substances which he calls ‘clathrates’. 1984N. N. Greenwood & A. Earnshaw Chem. of Elem. (1986) xviii. 1047 Probably the most familiar of all clathrates are those formed by Ar, Kr and Xe with quinol, 1,4-C6H4(OH)2, and with water. 2004N.Y. Times (National ed.) 6 Jan. d3/1 Clathrates, also known as gas hydrates, occur..under the seafloor and in Arctic permafrost, for instance.
▪ II. † clathrate, v. Obs.—0
[f. L. clāthr-āre to furnish with a lattice or bars, f. clāthri (pl.) lattice (Gr. κλῇθρα, κλεῖθρα bars): see -ate3.]
To furnish with or mark like lattice-work.
1623Cockeram, ii, To stop with lattice or barres, Clathrate. 1731–6Bailey, Clathrated, cross-barred. |
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