INVALUABLE
\ɪnvˈaljuːəbə͡l], \ɪnvˈaljuːəbəl], \ɪ_n_v_ˈa_l_j_uː_ə_b_əl]\
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By William Dodge Lewis, Edgar Arthur Singer
By Daniel Lyons
By Thomas Sheridan
Word of the day
Quinones
- Hydrocarbon rings which contain two moieties position. They can be substituted in any position except at the ketone groups.