A tubular apparatus containing a system of prisms or mirrors so as to give a viewpoint displaced from the observer's eye by the length of the…
| 单词 | θ64770 |
| 释义 | the world > physical sensation > sight and vision > optical instruments > instrument for distant vision > [noun] > periscope (at sea) (8) periscope1899 A tubular apparatus containing a system of prisms or mirrors so as to give a viewpoint displaced from the observer's eye by the length of the… look-see1925 Military slang. A telescope or periscope. rare. perisher1925 Nautical slang. The periscope of a submarine. Hence: a submarine commander's qualifying course; an officer on such a course. Also attributive in peris… Subcategories:— periscope (on land) (5) |
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