STEPPING-STONE
\stˈɛpɪŋstˈə͡ʊn], \stˈɛpɪŋstˈəʊn], \s_t_ˈɛ_p_ɪ_ŋ_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.