鏡面

1. Origins, structure, and basic meaning

• Structure: 鏡面 (きょうめん) combines 鏡, mirror, and 面, surface, and means a smooth, reflective mirror-like surface.
• Basic usage: It describes a finish on metal, glass, or another material, or the surface from which light reflects.
  • 金属を磨いて鏡面のように仕上げた。 — We polished the metal to a mirror finish.
  • 鏡面で反射した光が壁に当たった。 — Light reflected from the polished surface onto the wall.

2. Common pitfalls and similar expressions

• Mirror versus surface
  • 鏡面 focuses on the condition of a surface, not on a mirror as an object. 鏡面仕上げ specifically refers to a mirror finish.