gnostic
Concise Oxford English Dictionary © 2008 Oxford University Press:
gnostic /ˈnɒstɪk/
▶adjective
- 1 relating to knowledge, especially esoteric mystical knowledge.
- 2 (Gnostic) relating to Gnosticism.
– origin C16: via eccles. L. from Gk gnōstikos, from gnōstos ‘known’.
'gnostic' also found in these Oxford entries:

