| Subject | English | Catalan |
| comp., MS | persistent chat | xat persistent (A type of chat in which messages are posted to a chat room where they can be viewed and responded to in real time by multiple participants. Users can search for other rooms by name, member/owner, keywords, and content across groups from Lync) |
| environ. | persistent organic pollutant | contaminant orgànic persistent |
| math. | persistent state | estat recurrent positiu |
| math. | persistent state | estat persistent |