| Irish | English |
| ceanntásc P2 | 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) |
| Rochtain Chosanta Wi-Fi 2 | Wi-Fi Protected Access 2 (A wireless implementation and the second generation of WPA security that is based on the final IEEE 802.11i amendment to the 802.11 standard) |
| 2T | 2-D (Existing in reference to two measures, such as height and width--for example, a two-dimensional model drawn with reference to an x-axis and a y-axis, or a two-dimensional array of numbers placed in rows and columns) |
