APLANATIC OCULAR
\ɐplɐnˈatɪk ˈɒkjʊlə], \ɐplɐnˈatɪk ˈɒkjʊlə], \ɐ_p_l_ɐ_n_ˈa_t_ɪ_k ˈɒ_k_j_ʊ_l_ə]\
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An o. corrected for spherical aberration, with the chromatic aberration usually eliminated,
By Smith Ely Jelliffe
Word of the day
savings and loan
- thrift institution that is required by law to make a certain percentage of its loans as home mortgages