in music, the fifth note of the gamut, ut, re, mi, fa, sol, la. See Gamut.

Sou, a French coin made up of copper mixed with a little silver, and is worth upwards of an English halfpenny, or the 23rd part of an English shilling. The sol when first struck was equal in value to 12 deniers Tournois, whence it was also called clouzain; a name it still retains, tho' its ancient value be changed; the sol having been since augmented by three deniers, and struck with a punch on of a fleur-de-lis, to make it current for 15 deniers. Soon after the old sols were coined over again, and both old and new were indifferently made current for 15 deniers. In 1709, the value of the same sols was raised to 18 deniers. Towards the latter end of the reign of Louis XIV. the sol of 18 deniers was again lowered to 15; and by the late king it was reduced to the original value of 12. What it is at present posterity may perhaps discover.

The Dutch have also two kinds of sols: the one of silver, called sols de gros, and likewise schelling; the other of copper, called also the fluyver.

Sun, in astronomy, astrology, &c. See Astronomy, pulsium.

chemistry, is gold; thus called from an opinion that this metal is in a particular manner under the influence of the sun.

heraldry, denotes Or, the golden colour in the arms of sovereign princes.