GEOMETRICAL OPTICS
\d͡ʒˌiːə͡ʊmˈɛtɹɪkə͡l ˈɒptɪks], \dʒˌiːəʊmˈɛtɹɪkəl ˈɒptɪks], \dʒ_ˌiː__əʊ_m_ˈɛ_t_ɹ_ɪ_k_əl ˈɒ_p_t_ɪ_k_s]\
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.