释义 |
WordReference Random House Learner's Dictionary of American English © 2024prism /ˈprɪzəm/USA pronunciation n. [countable]- Opticsa transparent solid object used for breaking up light into a spectrum of colors.
- Mathematics[Geometry.]a solid having parallel bases and parallel sides.
pris•mat•ic /prɪzˈmætɪk/USA pronunciation adj. WordReference Random House Unabridged Dictionary of American English © 2024prism (priz′əm),USA pronunciation n. - Opticsa transparent solid body, often having triangular bases, used for dispersing light into a spectrum or for reflecting rays of light.
- Mathematics[Geom.]a solid having bases or ends that are parallel, congruent polygons and sides that are parallelograms.
- Crystallographya form having faces parallel to the vertical axis and intersecting the horizontal axes.
- Greek prîsma literally, something sawed, akin to prí̄zein to saw, prīstēs sawyer
- Late Latin prīsma
- 1560–70
Collins Concise English Dictionary © HarperCollins Publishers:: prism /ˈprɪzəm/ n - 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
- a polyhedron having parallel, polygonal, and congruent bases and sides that are parallelograms
Etymology: 16th Century: from Medieval Latin prisma, from Greek: something shaped by sawing, from prizein to saw |