| Subject | English | Catalan |
| comp., MS | alias (The portion of the e-mail address that appears to the left of the | àlies |
| comp., MS | left arrow | fletxa esquerra (The key on the keyboard that is labeled with a left arrow) |
| math. | left-censoring | censura per l'esquerra |
| comp., MS | left-to-right | d'esquerra a dreta (Pertaining to keyboard settings, document views, user interface objects, and languages for which text is displayed in a left-to-right direction. English and most other European languages are left-to-right languages) |
| math. | left-truncation | truncament per l'esquerra |
| comp., MS | Left voicemail | Missatge al contestador (Check box on Phone Call form that indicates that, when the call was made, a voicemail was left for the recipient) |
| comp., MS | right-to-left | de dreta a esquerra (Pertaining to keyboard settings, document views, user interface objects, languages, etc. for which text is displayed in a right-to-left direction) |