| Subject | English | Icelandic |
| math. | compact serial cluster | samningur framhaldssaga þyrping |
| comp., MS | compact disc read-only memory | geisladrif (A form of storage characterized by high capacity (roughly 650 MB) and the use of laser optics instead of magnetic means for reading data) |
| comp., MS | compact disc-recordable | skrifanlegur geisladiskur (A type of CD-ROM that can be written (only once) on a CD recorder and read on a CD-ROM drive) |
| comp., MS | compact disc-rewritable | endurskrifanlegur geisladiskur (A type of CD on which files can be copied, erased, and replaced) |
| comp., MS | compact row axis | ás samandreginnar línu (A feature that enables the user to compact or collapse rows when viewing several levels of data) |
| stat. | compact serial cluster | samningur framhaldssaga þyrping |
| math. | quasi-compact cluster | quasi-samningur þyrping |