| 单词 | prism |
| 释义 | Word Frequency prism(ˈprɪzəm) noun 1. a transparent polygonal solid, often having triangular ends and rectangular sides, for dispersing light into a spectrum or for reflecting and deviating light. They are used in spectroscopes, binoculars, periscopes, etc 2. a form of crystal with faces parallel to the vertical axis 3. mathematics a polyhedron having parallel, polygonal, and congruent bases and sides that are parallelograms Word origin C16: from Medieval Latin prisma, from Greek: something shaped by sawing, from prizein to saw |
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