请输入您要查询的英文单词:

 

单词 trithio-
释义

trithio-comb. form

Stress is usually determined by a subsequent element and vowels may be reduced accordingly. Some degree of stress is always maintained on the second syllable. If the subsequent element is an existing word, it is likely to retain its original stress pattern, e.g. trithiocarbonate Brit. /trʌɪˌθʌɪə(ʊ)ˈkɑːbənət/, /trʌɪˌθʌɪə(ʊ)ˈkɑːbəneɪt/, U.S. /traɪˌθaɪoʊˈkɑrbənət/.
Etymology: < tri- comb. form 3 + thio- comb. form.
Chemistry.
Prefix denoting that three atoms of sulphur have been substituted for three atoms of oxygen in the substance designated by the rest of the name; e.g. trithiocarbonic acid, H2CS3, derived from carbonic acid, H2CO3; trithiocarbonate, a salt of this acid. In many cases, however, tri- refers to the whole substance and not to the sulphur alone; e.g. trithio-acetaldehyde, (CH3CHS)3, a compound of three molecules of thio-acetaldehyde, CH3CHS.
ΚΠ
1894 H. F. Morley & M. M. P. Muir Watts' Dict. Chem. (rev. ed.) IV. 692 Tri-Thio-Citric Ether C3H5O(CO.SEt)3..Oil, smelling like mercaptan.
1899 E. F. Smith tr. V. von Richter Org. Chem. (ed. 3) I. 203 Trithio-formaldehyde (CH2S)3, melts at 216°.
1910 A. J. Walker & O. E. Mott tr. A. F. Holleman Text-bk. Org. Chem. (ed. 3) 348 Carbon disulphide..With alkali-metal or alkaline-earth-metal sulphides it yields trithiocarbonates.
This entry has not yet been fully updated (first published 1915; most recently modified version published online March 2022).
<
comb. form1894
随便看

 

英语词典包含1132095条英英释义在线翻译词条,基本涵盖了全部常用单词的英英翻译及用法,是英语学习的有利工具。

 

Copyright © 2004-2022 Newdu.com All Rights Reserved
更新时间:2025/3/27 3:48:38