ROLL FILM
\ɹˈə͡ʊl fˈɪlm], \ɹˈəʊl fˈɪlm], \ɹ_ˈəʊ_l f_ˈɪ_l_m]\
Word of the day
Quinones
- Hydrocarbon rings which contain two moieties position. They can be substituted in any position except at the ketone groups.