RYDBERG CONSTANT
\ɹˈɪdbɜːɡ kˈɒnstənt], \ɹˈɪdbɜːɡ kˈɒnstənt], \ɹ_ˈɪ_d_b_ɜː_ɡ k_ˈɒ_n_s_t_ə_n_t]\
Word of the day
Snake's-head
- Guinea-hen flower; -- so called in England because its spotted petals resemble the scales of a snake's head.