| Subject | English | Catalan |
| math. | Pearl-Read curve | corba logística |
| math. | Pearl-Read curve | corba de Pearl-Read |
| comp., MS | Read mode | mode Lectura (A mode that is optimized for reading or viewing content and does not support edit functionality) |
| comp., MS | read-only | només de lectura (Capable of being retrieved (read), printed or copied but not changed (written) or saved) |
| comp., MS | read-optimized | lectura optimitzada (Type of form that is not editable, so viewers can quickly see data, but not modify it) |
| comp., MS | read receipt | confirmació de recepció (An e-mail feature providing feedback to the sender that a message has been read by the recipient) |
| comp., MS | read/write | lectura/escriptura (Able to be both read from and written to) |
| comp., MS | reading indicator | marcador de lectura (A visual effect in the navigation pane that shows users where they are in a document) |
| comp., MS | reading pane | subfinestra de lectura (A window in an e-mail program where you can preview an item without opening it) |
| comp., MS | reading position indicator | marcador de posició de lectura (A visual effect in the navigation pane that shows users where they are in a document) |