The word Abraxas (or Abrasax or Abracax) was engraved on certain antique stones, called on that account Abraxas stones, which were used as amulets or charms. The name is found in the Greek Magical Papyrii, and the word may be related to the word abracadabra, although other explanations exist. The name is also found in Gnostic texts such as the Gospel of the Egyptians.
The letters of Abraxas, in the Greek system of alphabetic numerology, sum to the number 365, and the Basilideans gave the name to the 365 orders of spirits which, as they conceived, emanated in succession from the Supreme Being. These orders were supposed to occupy 365 heavens, each fashioned like, but inferior to that above it; and the lowest of the heavens was thought to be the abode of the spirits who formed Earth and its inhabitants, and to whom was committed the administration of its affairs.
In addition to the word Abraxas and other mystical characters, they have often symbolic mystical figures engraved on them. The most common of these have the head of a fowl, and the arms and bust of a man, and terminate in the body and tail of a serpent.
On the Abraxas gems, the figure had a Chimera-like appearance (somewhat resembling a basilisk): he had the head of a rooster (or sometimes a king), the body of a man, and legs fashioned like snakes and sometimes depicted with a whip in his hand - a form referred to as the Anguipede.
Source: Wikipedia (http://en.wikipedia.org/wiki/Abraxas)
Abraxas Part I - Demonology Profile
