| English | eng-000 |
| concave surface | |
| 普通话 | cmn-000 | 凹面 |
| English | eng-000 | concave |
| English | eng-000 | concave camber |
| English | eng-000 | concave plane |
| English | eng-000 | concavity |
| English | eng-000 | rearward face |
| ʻōlelo Hawaiʻi | haw-000 | ʻili poʻopoʻo |
| فارسی | pes-000 | سطح مقعر |
| русский | rus-000 | вогнутая поверхность |
| chiShona | sna-000 | dzamu |