UNCHALLENGED
\ʌnt͡ʃˈalɪnd͡ʒd], \ʌntʃˈalɪndʒd], \ʌ_n_tʃ_ˈa_l_ɪ_n_dʒ_d]\
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Word of the day
Quinones
- Hydrocarbon rings which contain two moieties position. They can be substituted in any position except at the ketone groups.