Gnosis (from the greek word for knowledge, γνώσις) has several uses:
Among the gnostics, gnosis was the "knowledge of the heart" or "insight" about the spiritual nature of the cosmos, that brought about salvation to the pneumatics - a group of humans that could achieve this insight.
Gnosis is also the name of magazine published between 1985 and 1999 in California as a "Journal of the Western Inner Traditions" featuring articles, interviews and reviewing dealing with various traditions of spirituality and mysticism. It was a project of the Lumen Foundation.
External link
http://www.lumen.org/ Gnosis magazine archive site