EMPYREUM

\ɛmpɪɹˈiːəm], \ɛmpɪɹˈiːəm], \ɛ_m_p_ɪ_ɹ_ˈiː__ə_m]\
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1790 - A Complete Dictionary of the English Language
By Thomas Sheridan

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Quinones

  • Hydrocarbon rings which contain two moieties position. They can be substituted in any position except at the ketone groups.
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