PERCUSSION INSTRUMENT
\pəkˈʌʃən ˈɪnstɹəmənt], \pəkˈʌʃən ˈɪnstɹəmənt], \p_ə_k_ˈʌ_ʃ_ə_n ˈɪ_n_s_t_ɹ_ə_m_ə_n_t]\
Word of the day
Quinones
- Hydrocarbon rings which contain two moieties position. They can be substituted in any position except at the ketone groups.