REFRACTIVE ERROR
\ɹɪfɹˈaktɪv ˈɛɹə], \ɹɪfɹˈaktɪv ˈɛɹə], \ɹ_ɪ_f_ɹ_ˈa_k_t_ɪ_v ˈɛ_ɹ_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.