| Subject | English | French |
| light. | CIE 1976 UCS diagram | diagramme de chromaticité uniforme CIE 1976 |
| el. | CIE 1960 UCS diagram | diagramme de chromaticité uniforme CIE 1960 |
| earth.sc. | UCS diagram | diagramme de chromaticité uniforme |
| comp., MS | UCS Transformation Format 8 | UTF-8 (A character set for protocols evolving beyond the use of ASCII. The UTF-8 protocol provides for support of extended ASCII characters and translation of UCS-2, an international 16-bit Unicode character set. UTF-8 enables a far greater range of names than can be achieved using ASCII or extended ASCII encoding for character data) |