| Subject | English | French |
| IT, tech. | unary operation | opération monadique |
| scient. | unary operation | opération unaire |
| comp. | unary operation | opération à opérande unique |
| IT, transp. | unary operator | opérateur unaire |
| IT, tech. | unary operator | opérateur monadique |
| comp., MS | unary operator | opérateur unaire (An operator that takes only one operand, for example, the increment (++) operator) |
| IT | unary relation | relation unitaire |
| gram. | unary transformation | transformation unaire |
| gram. | unary transformation | transformation singulière |