LESSEN
\lˈɛsən], \lˈɛsən], \l_ˈɛ_s_ə_n]\
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By Princeton University
By DataStellar Co., Ltd
By William Dodge Lewis, Edgar Arthur Singer
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.