OPTICAL ABERRATION
\ˈɒptɪkə͡l ˌabəɹˈe͡ɪʃən], \ˈɒptɪkəl ˌabəɹˈeɪʃən], \ˈɒ_p_t_ɪ_k_əl ˌa_b_ə_ɹ_ˈeɪ_ʃ_ə_n]\
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By Princeton University
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.