Episteme
"Episteme" is a philosophical term derived from the Ancient Greek word ἐπιστήμη "epistēmē", which can refer to knowledge, science or understanding, and which comes from the verb , meaning "to know, to understand, or to be acquainted with".
Institute of Noetic Sciences
The word "noetic" derives from the Greek "nous", meaning "mind or ways of knowing." Writing in "The Huffington Post", the Institute's director of research pointed to philosopher William James' 1902 definition of the word as: