凹
2 readings · tap one to hear it
concave; depressed; sunken; indented; female (connector etc)
- HSK 3.0
- Level 7–9
- Old HSK
- Level 6
- Strokes
- 5
- Radical
- 凵 +3
- Structure
- Top–bottom 上下
- Traditional
- 凹
- Common rank
- #1,910
- Unicode
- U+51F9
Sound it out + =
Formation & memory
Break the character into parts you already know.
How to remember it
concave · Heisig RSH #31
Keyword method from Heisig's Remembering Simplified Hanzi.
Words with 凹
The most common words first — learning a character in context makes it stick.
| Word | Pinyin | Meaning |
|---|---|---|
| 凹面镜 | concave mirror | |
| 凹凸不平 | (idiom) uneven (surface); bumpy (road) | |
| 山凹 | col; valley | |
| 凹造型 | (coll.) to strike a pose | |
| 凹线 | groove | |
| 凹度 | concavity | |
| 中央凹 | fovea centralis (depression in the macula retina, most sensitive optic region) | |
| 凹入 | recessed; concave | |
| 凹板 | variant of 凹版[ao1 ban3] | |
| 凹进 | concave; recessed; dented | |
| 凹凸有致 | curvaceous | |
| 凹透镜 | concave lens | |
| 凹凸性 | (math.) concavity | |
| 胃小凹 | (physiology) gastric pits | |
| 凹镜 | concave mirror | |
| 凹凸形 | crenelated; corrugated | |
| 贾平凹 | Jia Pingwa (1952-), Chinese novelist | |
| 凹朴皮 | bark of tulip tree (TCM); Cortex Liriodendri | |
| 微凹黄檀 | cocobolo (Dalbergia retusa) | |
| 凹凸印刷 | embossing; die stamping |