a philosophical system, originated in the 3rd century a.d. by Plotinus, founded chiefly on Platonic doctrine and Oriental mysticism, with later influences from Christianity. It holds that all existence consists of emanations from the One with whom the soul may be reunited.
1845, a philosophical and religious system mixing Platonic ideas and oriental mysticism, originating 3c. at Alexandria, especially in writings of Plotinus, Porphyry, and Proclus. Neoplatonian is attested from 1831.