| Subject | English | Latvian |
| IT, tech. | layer 3 | tīkla slānis |
| comp., MS | MPEG Audio Layer-3 | MPEG audio slānis 3 (A digital audio coding scheme used to distribute recorded music over the Internet. MP3 shrinks the size of an audio file by a factor of 10 to 12 without degrading the quality (CD-recording level) of the sound) |