| Subject | English | Icelandic |
| math. | characteristic functional | einkennandi hagnýtur |
| comp., MS | cross-functional flowchart | hlutverkaskipt flæðirit (A type of flowchart that shows the relationship between a business process and the functional units (such as departments) responsible for that process) |
| math. | functional central limit theorem | setningin Donsker's |
| math. | functional central limit theorem | invariance meginreglu |
| math. | functional central limit theorem | hagnýtur mið takmarka setningin |
| comp., MS | functional currency unit | virk gjaldsmiðilseining (A currency unit of a country/region in which a primary legal entity locates its business activities and in which it generates most of its revenue and expenses) |
| math. | functional relationship | hagnýtur samband |