downeyite
(mineralogy) A tetragonal-ditetragonal dipyramidal colorless mineral containing oxygen and selenium.
(uncommon) The philosophical study of knowledge.
plural of chaperone
(informal, vulgar) To wet oneself; to urinate in one's own clothes while they are being worn. / (informal, vulgar, idiomatic) To laugh uncontrollably.
博物館の展示には、酸素とセレンを含む無色の四方晶系の二重四方双錐形をした鉱物の標本があった。
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DiQt
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