PASSIVE AIR DEFENSE
\pˈasɪv ˈe͡ə dɪfˈɛns], \pˈasɪv ˈeə dɪfˈɛns], \p_ˈa_s_ɪ_v ˈeə d_ɪ_f_ˈɛ_n_s]\
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By Princeton University
By DataStellar Co., Ltd
Word of the day
Quinones
- Hydrocarbon rings which contain two moieties position. They can be substituted in any position except at the ketone groups.