凹

āo

HSK 3.0 Level 7 Adjective Uncommon

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Definitions

1. depressed
2. sunken
3. indented
4. concave
5. female (connector etc)

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Stroke order

5 strokes

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Word relationships

Antonyms

1 item

• 凸 tū 凸 tū to stick out convex; raised: to stick out

Related words

2 items

• 瘪 biě 瘪 biě deflated deflated; shrivelled; often of tires or cheeks: deflated
• 洼 wā 洼 wā depression low-lying; hollow; often of land: depression

Synonyms

1 item

• 凹陷 āo xiàn 凹陷 āo xiàn to cave in; hollow; sunken; depressed concave; sunken: to cave in; hollow; sunken; depressed

Usage notes

Common mistakes

Don't confuse 凹 (āo, concave) with 凸 (tū, convex); they are visual opposites.

Example Sentences

1 shown

这条路中间有点儿 凹 。

The middle of this road is a bit sunken.

AI-generated examples are marked with this icon.

Words Containing 凹

• 凹凸 凹凸 āo tū: concave or convex
• 中央凹 中央凹 zhōng yāng āo: fovea centralis (depression in the macula retina, most sensitive optic region)
• 凹入 凹入 āo rù: recessed
• 凹凸不平 凹凸不平 āo tū bù píng: uneven (surface)
• 凹凸印刷 凹凸印刷 āo tū yìn shuā: embossing
• 凹凸形 凹凸形 āo tū xíng: crenelated
• 凹凸性 凹凸性 āo tū xìng: concavity (math.)
• 凹凸有致 凹凸有致 āo tū yǒu zhì: curvaceous
• 凹凸轧花 凹凸轧花 āo tū yà huā: embossing
• 凹坑 凹坑 āo kēng: concave depression
• 凹岸 凹岸 āo àn: concave bank
• 凹度 凹度 āo dù: concavity
• 凹朴皮 凹朴皮 āo pò pí: bark of tulip tree (TCM)
• 凹槽 凹槽 āo cáo: recess
• 凹洞 凹洞 āo dòng: cavity
• 凹版 凹版 āo bǎn: intaglio printing plate (or a print made with it)
• 凹痕 凹痕 āo hén: dent
• 凹纹 凹纹 āo wén: die (printing, metalwork etc)
• 凹线 凹线 āo xiàn: groove
• 凹透镜 凹透镜 āo tòu jìng: concave lens
• 凹造型 凹造型 āo zào xíng: (coll.) to strike a pose
• 凹进 凹进 āo jìn: concave
• 凹镜 凹镜 āo jìng: concave mirror
• 凹陷 凹陷 āo xiàn: to cave in; hollow; sunken; depressed
• 凹雕 凹雕 āo diāo: to engrave
• 凹面镜 凹面镜 āo miàn jìng: concave mirror
• 山凹 山凹 shān āo: col
• 微凹黄檀 微凹黄檀 wēi āo huáng tán: cocobolo (Dalbergia retusa)
• 胃小凹 胃小凹 wèi xiǎo āo: (physiology) gastric pits
• 贾平凹 贾平凹 jiǎ píng wā: Jia Pingwa (1952-), Chinese novelist