Sol

noun
  1. The fifth note of the diatonic scale in solfège, also known as 'G' in fixed-do solfège. noun
    In the key of C major, sol corresponds to the note G.
    The choir practiced singing the scale, emphasizing the note sol.
  2. A colloquial term for the sun, often used in poetry or science fiction. noun
    The planet revolves around its sol, providing light and warmth.
    In the story, the explorers landed on a planet with a red sol.
  3. The basic monetary unit of Peru, divided into 100 céntimos. noun
    She exchanged her dollars for soles before traveling to Peru.
    The price of the souvenir was twenty soles.
  4. A term used in astronomy to refer to a solar day on Mars, equivalent to 24 hours, 39 minutes, and 35.244 seconds. noun
    The rover completed its mission on the Martian surface after 500 sols.
    Scientists track the progress of the mission by counting the number of sols.