dioptrics
(rare) A nonsense word, often repeated along with other similar nonsense words, such as nyah or na-na.
In a haunted way.
plural of lancepod
the study of the refraction of light, especially by lenses
彼女は屈折学（特にレンズによる光の屈折の研究）とその矯正用眼鏡への応用について論文を書いた。
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DiQt
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