| Subject | English | French |
| IT | uniqueness constraint | contrainte d'unicité |
| comp., MS | uniqueness constraint | contrainte d'unicité (A constraint that prohibits repetition of individual data or combinations of data) |
| automat. | uniqueness of solution | unicité d'une solution |
| astr. | uniqueness of the solution | uniformité de la solution |
| automat. | uniqueness theorem | théorème de l'unicité |
| tech. | uniqueness theorem | théorème d'unicité |