[1] : The Collaborative International Dictionary of English v.0.48

abraxas \abrax"as\, n. a name adopted by the egyptian gnostic
   basilides, containing the greek letters alpha, beta,
   rho, alpha, xi, alpha, sigma, which, as numerals,
   amounted to 365. it was used to signify the supreme deity as
   ruler of the 365 heavens of his system.
   a mystical word used as a charm and engraved on gems among
   the ancients; also, a gem stone thus engraved.
   1913 webster

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Abraxas, definition of term: Abraxas
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