凹 āo 🔊 concave HSK 7–95 strokes + Review this word Meanings āo concave; depressed; sunken; indented; female (connector etc) wā variant of 窪|洼[wa1](used in names) Words with 凹 凹陷 āo xiàn to cave in; hollow; sunken; depressed 凹凸 āo tū concave or convex 山凹 shān āo col 贾平凹 Jiǎ Píng wā Jia Pingwa (1952-), Chinese novelist 凹凸不平 āo tū bù píng uneven (surface); bumpy (road) 凹槽 āo cáo recess 凹面镜 āo miàn jìng concave mirror 凹版 āo bǎn intaglio printing plate (or a print made… 凹进 āo jìn concave 凹坑 āo kēng concave depression 凹透镜 āo tòu jìng concave lens 凹度 āo dù concavity