| 单词 | episcotister |
| 释义 | episcotister in American English (əˈpɪskəˌtɪstər, ˌepɪskəˈtɪstər) noun a disk with a sector removed that when rotated in front of a light source allows the periodic passage of flashes of light: used in studying the motion of a body Also: episkotister Word origin [1900–05; ‹ Gk episkot(ízein) to overshadow ( see epi-, scotia, -ize) + -ist + -er1] |
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