OPTICAL ANGLE
\ˈɒptɪkə͡l ˈaŋɡə͡l], \ˈɒptɪkəl ˈaŋɡəl], \ˈɒ_p_t_ɪ_k_əl ˈa_ŋ_ɡ_əl]\
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.