UMBEL
\ˈʌmbə͡l], \ˈʌmbəl], \ˈʌ_m_b_əl]\
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By James Champlin Fernald
By Daniel Lyons
By William Hand Browne, Samuel Stehman Haldeman
Word of the day
Quinones
- Hydrocarbon rings which contain two moieties position. They can be substituted in any position except at the ketone groups.