The hieroglyph of Leo, for instance, occurs among the symbols of the Mithraic worship."
The other view traces it to khem or khame, hieroglyph khmi, which denotes black earth as opposed to barren sand, and occurs in Plutarch as XvAda; on this derivation alchemy is explained as meaning the " Egyptian art."
The hieroglyph of some other early sun temples shows a disk on the pyramidion.