| Subject | Icelandic | English |
| comp., MS | LCP | Link Control Protocol (A PPP control protocol that negotiates link and PPP parameters to dynamically configure the data-link layer of a PPP connection) |
| math. | Mallows's Cp tölfræði | Mallows's Cp statistic |
| comp., MS | Complete PC-endurheimt | Complete PC Restore (A tool in Windows Vista that restores the entire computer (OS, settings, and files)) |
| comp., MS | Complete PC-öryggisafrit | Complete PC Backup (A tool in Windows Vista that backs up the entire computer (OS, settings, and files)) |
| math. | p-fall | p-function |
| math. | p-gildi | p-value |
| comp., MS | P2-haus | P2 header (A hidden section of an e-mail message. From the time a message is first created, information about it is added to the message header, including technical details, such as who created the message and the software used to compose it) |
| comp., MS | P1-haus | P1 header (" The information contained in an e-mail message that is required to send and deliver a message between messaging servers by using SMTP protocol commands. The message envelope contains the sender e-mail address and the recipient e-mail address information. Recipients never see the message envelope, because it is not part of the message content, and it is discarded when the message reaches its destination. The X.400 messaging standard equivalent to the message envelope is called the "P1 header." The message envelope is often referred to as the "P1 header.") |
| comp., MS | p-kóði | p-code (A machine language for a nonexistent processor (a pseudomachine). Such code is executed by a software interpreter) |
| fish.farm. | P. ostra | Portuguese oyster (Crassostrea angulata) |
| math. | P-P lóð | P-P plot |
| math. | p-tölfræði | p-statistics |
| math. | Priestly P-próf | Priestly's λ-test |
| math. | Priestly P-próf | Priestly's Lambda-test |
| math. | Priestly P-próf | Priestly's P-test |
| comp., MS | TCP | Transmission Control Protocol (The protocol within TCP/IP that governs the breakup of data messages into packets to be sent via IP, and the reassembly and verification of the complete messages from packets received by IP) |
| comp., MS | TCP/IP | Transmission Control Protocol/Internet Protocol (A set of networking protocols widely used on the Internet that provides communications across interconnected networks of computers with diverse hardware architectures and various operating systems. TCP/IP includes standards for how computers communicate and conventions for connecting networks and routing traffic) |