SPROCKET WHEEL

\spɹˈɒkɪt wˈiːl], \spɹˈɒkɪt wˈiːl], \s_p_ɹ_ˈɒ_k_ɪ_t w_ˈiː_l]\
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1919 - The Concise Standard Dictionary of the English Language
By James Champlin Fernald

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Pyrrolidinones

  • A compounds that are derivatives oxo-pyrrolidines. member this group 2-oxo pyrrolidine, which is an intermediate in the manufacture of polyvinylpyrrolidone. (From Merck Index, 11th ed)
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