| 单词 | ketene |
| 释义 | ketene[ kee-teen ] / ˈki tin / noun Chemistry.a colorless, poisonous gas, C2H2O, irritating to the lungs, prepared from acetone or acetic acid by pyrolysis: used chiefly in the manufacture of certain commercial chemicals, as acetic anhydride and aspirin. Origin of keteneFirst recorded in 1905–10; ket- + -ene Words nearby keteneketch, Ketchikan, ketch-rigged, ketchup, kete, ketene, keto, keto acid, ketoacidosis, ketoaciduria, ketoconazole Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020 British Dictionary definitions for keteneketene / (ˈkiːtiːn, ˈkɛt-) / nouna colourless irritating toxic gas used as an acetylating agent in organic synthesis. Formula: CH 2 :COAlso called: ethonone Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012 |
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