PLANOCONVEX LENS
\plˈanəkˌɒnvɛks lˈɛnz], \plˈanəkˌɒnvɛks lˈɛnz], \p_l_ˈa_n_ə_k_ˌɒ_n_v_ɛ_k_s l_ˈɛ_n_z]\
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.