| Subject | English | Welsh |
| comp., MS | addition operator | arwydd plws (The + character, used to indicate addition or a positive number) |
| comp., MS | comparison operator | gweithredwr cymharu (A character or symbol that indicates a relationship between two or more values or expressions - for example, < (less than), > (greater than), and = (equal to)) |
| comp., MS | mobile operator | cwmni ffôn symudol (A company that provides telephone and other communications services to consumers) |
| comp., MS | operator account | cyfrif gweithredwr (The account of the user who is managing the import process for a deployment package) |