- Neoplatonism - a system of philosophical and religious doctrines composed of elements of Platonism and Aristotelianism and oriental mysticism; its most distinctive doctrine holds that the First Principle and source of reality transcends being and thought and is naturally unknowable; "Neoplatonism was predominant in pagan Europe until the 6th century"; "Neoplatonism was a major influence on early Christian writers and on later medieval and Renaissance thought and on Islamic philosophy"
--1 is a kind of philosophical doctrine, philosophical theory; theological doctrine, religious doctrine