prism: [16] The etymological idea underlying the word prism is of its shape, that of a ‘sawn-off’ piece. It comes via medieval Latin prisma from Greek prísma, a derivative of the verb prízein ‘saw’. Its optical application emerged in English at the beginning of the 17th century.
prism (n.)
1560s, a type of solid figure, from Late Latin prisma, from Greek prisma (Euclid), literally "something sawed," from prizein "to saw" (see prion). Meaning in optics is first attested 1610s.
双语例句
1. Light is refracted when passed through a prism.
光通过棱镜时产生折射。
来自《权威词典》
2. A spectrum is formed by a ray of light passing through a prism.
一束光通过棱镜就会形成光谱。
来自《权威词典》
3. The prelude was as iridescent as a prism in a morning room.
这个序曲就象清晨房间里的一块三棱镜一样灿烂辉煌.
来自《简明英汉词典》
4. The prism broke the light into all the colors of the rainbow.
棱镜把光分解成虹的各种色彩.
来自《现代英汉综合大词典》
5. Release Packaging Material and PRISM system input, regular trend analysis and report.