ˈmistəˌsizəm noun
( -s )
Etymology: mystic (I) + -ism
1. : the experience of mystical union or direct communion with ultimate reality reported by mystics
2. : a theory of mystical knowledge : the doctrine or belief that direct knowledge of God, of spiritual truth, of ultimate reality, or comparable matters is attainable through immediate intuition, insight, or illumination and in a way differing from ordinary sense perception or ratiocination
nature mysticism
3.
a. : vague speculation : vagary : a belief without foundation
b. : any theory postulating or based on the possibility of direct and intuitive acquisition of ineffable knowledge or power