The name given by the Basilidians to the Supreme Being, under whom they supposed 365 dependent deities; antique gems or stones with the word Abraxas engraven on them, formerly much sought after as amulets; an insect.
- Nuttall's Standard dictionary of the English language. By Nuttall, P.Austin. Published 1914. (noun) (n.) (noun)

Usage examples:

Doncaster has seen in Abraxas grossulariata ova with two nuclei both undergoing maturation.
- Hormones and Heredity by J. T. Cunningham
He had a large collection of amulets, Gnostic gems, and abraxas stones.
- Aylwin by Theodore Watts-Dunton
We still possess the traces of the Gnostic astrology in a number of amulets and engraved gems, with the word Abraxas or rather Abrasax and other emblems of their superstition, which they kept as charms against diseases and evil spirits.
- History Of Egypt From 330 B.C. To The Present Time, Volume 11 (of 12) by S. Rappoport