ECHO SOUNDER
\ˈɛkə͡ʊ sˈa͡ʊndə], \ˈɛkəʊ sˈaʊndə], \ˈɛ_k_əʊ s_ˈaʊ_n_d_ə]\
Word of the day
Quinones
- Hydrocarbon rings which contain two moieties position. They can be substituted in any position except at the ketone groups.