| English | eng-000 |
| refraction coefficient | |
| 普通话 | cmn-000 | 折光系数 |
| 普通话 | cmn-000 | 折射系数 |
| English | eng-000 | coefficient of refraction |
| English | eng-000 | refractivity |
| English | eng-000 | refringence |
| English | eng-000 | refringency |
| English | eng-000 | specific refraction |
| magyar | hun-000 | törésmutató |
| русский | rus-000 | коэффициент преломления |