Meaning

noun an advocate of Gnosticism

adjective of or relating to Gnosticism

adjective possessing intellectual or esoteric knowledge of spiritual things

originFrom Ancient Greek γνωστικός (gnōstikós, “relating to knowledge or knowing”), from the root of verb γιγνώσκω (gignṓskō, “to come to know, to learn”) + -τῐκός (-tĭkós) or from γνῶσις (gnôsis, “knowledge, knowing”) + -κός (-kós, adjective suffix), depending upon the analysis.

Etymology from Wiktionary, CC BY-SA 3.0