Pronunciation: (nos'tik),[key] —adj.Also,gnos'ti•cal. 1. pertaining to knowledge.
2. possessing knowledge, esp. esoteric knowledge of spiritual matters.
3. (cap.) pertaining to or characteristic of the Gnostics.
—n. (cap.) a member of any of certain sects among the early Christians who claimed to have superior knowledge of spiritual matters, and explained the world as created by powers or agencies arising as emanations from the Godhead.
a combination of -gnosis and -ic, used to form adjectives from stems ending in -gnosis:prognostic.