prism

n. 棱镜, 棱柱
【化】 棱镜
【医】 棱晶, 棱镜

prism

n.（名词）
A solid figure whose bases or ends have the same size and shape and are parallel to one another, and each of whose sides is a parallelogram.
棱柱（体），角柱（体）：多面固体，上下两底面大小、形状相同，且彼此平行，其余诸面则为平行四边形
A transparent body of this form, often of glass and usually with triangular ends, used for separating white light passed through it into a spectrum or for reflecting beams of light.
棱镜：这种形状的透明体，多为玻璃制成，通常两端为三角形，用来分解穿过柱体的白光，使光束发生色散或用来反射光线
A cut-glass object, such as a pendant of a chandelier.
刻花玻璃物体：如枝形吊灯的玻璃吊灯架
A crystal form consisting of three or more similar faces parallel to a single axis.
斜方晶：有三个或三个以上类似的面，且各面均平行于一根轴的一种晶体形式
A medium that misrepresents whatever is seen through it.
折光体：扭曲通过它看到的东西的中介质

来源：
Late Latin prosma
后期拉丁语 prosma
from Greek prisma [thing sawed off, prism]
源自 希腊语 prisma [被锯掉的东西，棱柱]
from priein, prizein [to saw]
源自 priein, prizein [锯]