- Sol is the **name of the sun** in the Latin language and in some modern languages derived from Latin, such as Spanish and Portuguese¹.
- Sol is also a **unit of time** used by NASA to measure the duration of a day on Mars, which is slightly longer than an Earth day².
- Sol is a **type of colloidal system**, in which solid particles are dispersed in a liquid medium³.
- Sol is a **file format** for presenting solutions of