ABERRATION, SPHERICAL
\ˌabəɹˈe͡ɪʃən], \ˌabəɹˈeɪʃən], \ˌa_b_ə_ɹ_ˈeɪ_ʃ_ə_n]\
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Indistinct images due imperfect refraction of a convex lens.
By William R. Warner
