What does "gnosis" mean?

An immanent form of knowledge or transcendent insight, such as sought by the Gnostics.

Gnosis

/ˈnəʊ.sɪs/ noun

noun ·Rare ·Advanced level

Noun

1
An immanent form of knowledge or transcendent insight, such as sought by the Gnostics. countable, uncountable
2
intuitive knowledge of spiritual truths; said to have been possessed by ancient Gnostics wordnet
3
The act or process of knowing in general. countable, uncountable
4
An altered state of awareness in which the will is magically effective. countable, uncountable

"There is only one true gnosis: that I percept what I percept."

From Ancient Greek γνῶσις (gnôsis, “knowledge”).