凹

• 拼音: āo
• 汉字拆解: 凹 = pictograph of a concave shape

含义

Concave; sunken; indented.

Describes surfaces that curve inward or are recessed. The opposite of 凸 (convex). Used in technical, descriptive, and everyday contexts.

例句

1. 这面凹镜可以把光线聚焦到一点。
2. 地上有一个凹坑，走路要小心。
3. 他的脸颊凹进去了，看起来很消瘦。

用法指南

语境: descriptive, technical

语气: objective

正确说法

• 凹凸不平的路面很难走。(Uneven road surfaces are hard to walk on.)
• 这里有一处凹陷。(There's an indentation here.)

错误说法

• 把'凹'读成āo之外的读音 (Don't mispronounce 凹 — it's āo, not wā)

起源与历史

A pictographic character depicting a concave shape — the middle part is lower than the sides.

文化背景

世代: All ages

社会背景: Universal