SYMMETRIAN

\sɪmˈɛtɹi͡ən], \sɪmˈɛtɹi‍ən], \s_ɪ_m_ˈɛ_t_ɹ_iə_n]\
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2010 - New Age Dictionary Database
By Oddity Software
 
1919 - The concise Oxford dictionary of current English
By Sir Augustus Henry

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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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