This ideogram is, among other things, a sun symbol. It has been found on seals
in Mohenjo-Daro in today's Pakistan from 3000-2000 B.C.
The sun wheel was the Gauls' most used beneficial amulet. The Gauls were the Celtic tribes living in what is now the French-speaking region of Europe. It is worth noting that the Celts used as the attribute of Taranis, the god of thunder. In this use the sign is equivalent to the staff carried by Zeus or Jupiter, , the staff of thunder and lightning.
Christian symbolism adopted the form, changing it slightly so that it became a Christ monogram drawn within a circle: .
The circle divided into six equal parts, with another circle in its center, , is the Tibetan world symbol, the world wheel. The outer rim is further divided into 12 parts in the same way as the Western zodiac circle. The inner circle band is divided into a light half and a dark half, which suggests that the wheel also symbolizes the same idea of the unity of opposites as does the Chinese yin-yang sign, .
In Japan is considered to be a sign with positive connotations.
This sign is not, however, widely used in modern ideography except as an electrical sign for a specific type of electric motor.
The alchemists sometimes used to denote malachite, an emerald-green mineral containing copper used, among other things, for the production of colouring pigment.