棱镜

Traditional form:

稜鏡

Pinyin (reading):

léngjìng

Definitions:

• (optics) prism

Characters:

• 棱 - squared timber; angle, corner, edge
• 镜 - mirror, glass; lens, glasses

Traditional characters:

• 稜 - edge, corner, angle; protrusion; square beam
• 鏡 - mirror, glass; lens, glasses