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ketene

[kee-teen] /ˈki tin/
noun, Chemistry
1.
a colorless, poisonous gas, C 2 H 2 O, 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 ketene
1905-1910
1905-10; ket- + -ene
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Based on the Random House Dictionary, © Random House, Inc. 2015.
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British Dictionary definitions for ketene

ketene

/ˈkiːtiːn; ˈkɛt-/
noun
1.
a colourless irritating toxic gas used as an acetylating agent in organic synthesis. Formula: CH2:CO Also 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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