hypostasen

Hypostasen is the plural form of hypostase, a term used in philosophy and theology to denote the underlying substance, reality, or personhood of a thing. The word comes from Greek hypostasis, meaning “that which stands under.” In English, the standard plural is hypostases; Hypostasen is the German plural form and may appear in German-language texts.

In philosophy, hypostasis refers to the concrete substrate or underlying reality that grounds particular properties or essences of a thing. In Aristotelian and later Neoplatonist thought, hypostases are used to describe substances or beings that bear properties; in Neoplatonism, the hypostases of reality are often enumerated as a hierarchical set such as the One, the Intellect (Nous), and the World Soul.

In theology, hypostases describe the distinct persons of the Christian Trinity: the Father, the Son, and the Holy Spirit are three hypostases sharing one divine essence. The term emphasizes personal distinctness within a singular divine nature and has been used in both Eastern and Western Christian traditions, with variations in nuance over time.

In modern usage, hypostasis remains a technical term in historical philosophy and theology. It is less common in contemporary secular discourse, where the concept is usually discussed under related terms such as substance, essence, or personhood. Some scholars use the term to discuss the way abstract or universal properties are instantiated in concrete beings.