EYE-STONE
\ˈa͡ɪstˈə͡ʊn], \ˈaɪstˈəʊn], \ˈaɪ_s_t_ˈəʊ_n]\
Word of the day
Quinones
- Hydrocarbon rings which contain two moieties position. They can be substituted in any position except at the ketone groups.