There are multiple definitions for the word "sol" depending on the context. Here are some of them:
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Mars Sol: A sol is a solar day on Mars, which is the apparent interval between two successive returns of the Sun to the same meridian as seen by an observer on Mars. It is one of several units for timekeeping on Mars and is slightly longer than an Earth day, approximately 24 hours, 39 minutes, 35 seconds long. A Martian year is approximately 668 sols, equivalent to approximately 687 Earth days or 1.88 Earth years.
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Musical note: Sol is the fifth note of the musical scale.
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Currency: Sol is the basic unit of money of Peru.
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Old French coin: Sol is an old French coin equal to 12 deniers.
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Physical chemistry: Sol is a colloid (aggregate of very fine particles dispersed in a continuous medium) in which the particles are solid and the dispersion medium is fluid. If the dispersion medium is water, the colloid may be called a hydrosol; and if air, an aerosol. Lyophobic (Greek: “liquid-hating”) sols are characterized by particles that are not strongly attracted to molecules of the dispersion medium and that are relatively easily coagulated and precipitated. Lyophilic (“liquid-loving”) sols are more stable and more closely resemble true solutions. Many sols are intermediate between lyophobic and lyophilic types.
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Roman mythology: Sol was an ancient Roman god personifying the sun.
In summary, "sol" can refer to a solar day on Mars, a musical note, a currency, an old French coin, a colloid in physical chemistry, or an ancient Roman god personifying the sun.
