adj. & n.
adj. 1 relating to knowledge, esp. esoteric mystical knowledge. 2 (Gnostic) concerning the Gnostics; occult; mystic.
n. (Gnostic) (usu. in pl.) a Christian heretic of the 1st-3rd c. claiming gnosis. Gnosticism n. gnosticize v.tr. & intr.
[ eccl.L gnosticus f. Gk gnostikos (as GNOSIS) ]