单词 | selen- |
释义 | selen-comb. form 1. Mineralogy. [After German selen selenium.] In names of certain minerals containing or formerly supposed to contain selenium. ΚΠ 1835 C. U. Shepard Treat. Mineral. (ed. 2) II. 177 Selen-cuprite. ΚΠ 1835 C. U. Shepard Treat. Mineral. (ed. 2) II. 177 Selenpalladite. Categories » ΚΠ 1857 J. D. Dana Man. Mineral. (1862) 327 Another seleniferous ore, from the Hartz, called selensilver. selensulphur n. Brit. /ˌsɛlənˈsʌlfə/ , /ˌsɛln̩ˈsʌlfə/ , U.S. /ˌsɛlənˈsəlfər/ a native variety of elemental sulphur containing a small proportion of selenium.ΚΠ 1849 J. Nicol Man. Mineral. 506 Selen-sulphur. 1944 C. Palache et al. Dana's Syst. Mineral. (ed. 7) I. 142 Old specimens of reddish brown selensulfur from Vulcano gave n [sc. refractive index] 2·544–2.675 indicating 83–90·5 per cent Se; but this high Se content lacks confirmation. selentellurium n. Brit. /ˌsɛləntᵻˈljʊərɪəm/ , /ˌsɛln̩tᵻˈljʊərɪəm/ , /ˌsɛləntᵻˈljɔːrɪəm/ , /ˌsɛln̩tᵻˈljɔːrɪəm/ , U.S. /ˌsɛləntəˈlʊriəm/ a native compound of selenium and tellurium.ΚΠ 1882 Jrnl. Chem. Soc. 42 705 For this natural fluosilicate he proposes the name hieralite, from Hiera, the Greek name for the island Vulcano. Hieralite is associated in the concretions with selensulphur, realgar, mirabilite, [etc.]. 1890 E. S. Dana & H. L. Wells in Amer. Jrnl. Sci. 40 79 We propose to call it Selen-tellurium. seleˈnaldine n. [ald- (in aldehyde n.) + -ine suffix5] a basic substance produced by the action of hydrogen selenide on ammonium aldehydate. ΚΠ 1848 W. T. Brande Man. Chem. (ed. 6) II. iii. 173 With seleniuretted hydrogen aldehyde-ammonia yields Selenaldine. selenethyl n. ethyl selenide. ΚΠ 1853 H. Watts tr. L. Gmelin Hand-bk. Chem. VIII. 356 Selenide of Ethyl or Selenethyl. selenhydric adj. = hydroselenic acid at hydro- comb. form 7. ΚΠ 1868 H. Watts Dict. Chem. V. 218 Selen~hydric Acid. selenhydrate n. (see quot. 1858). ΚΠ 1858 R. G. Mayne Expos. Lexicon Med. Sci. (1860) Selenhydrate, term by Berzelius for the combinations of hydric selenide with the metallic seleniurets which contain the radicals of alkalis and alkaline earths. This entry has not yet been fully updated (first published 1911; most recently modified version published online March 2022). < comb. form1835 |
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