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\bˈakɹuːm], \bˈakɹuːm], \b_ˈa_k_ɹ_uː_m]\
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1874 - Etymological and pronouncing dictionary of the English language
By Stormonth, James, Phelp, P. H.
 
1790 - A Complete Dictionary of the English Language
By Thomas Sheridan

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acetyl group

  • the organic group of acetic acid (CH3CO-)
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