Children's, Intermediate and Advanced Online English Dictionary & Thesaurus

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Sol in Roman mythology, the god of the sun; Helios. [2 definitions]
sol1 in music, the syllable that denotes the fifth tone of a diatonic scale. (See sol-fa.) [2 definitions]
sol2 a coin and monetary unit of France prior to the French Revolution, worth one-twentieth of a livre or twelve deniers.
sol3 the smaller monetary unit of Peru. (Cf. inti.)
sol4 a colloid that has the properties of a liquid. (Cf. gel.)