HYPOSTASIS

noun (plural hypostases) see: stand Date: 1590 1. something that settles at the bottom of a fluid, the settling of blood in the dependent parts of an organ or body, person 3, 3. the substance or essential nature of an individual, something that is hypostatized, failure of a gene to produce its usual effect when coupled with another gene that is epistatic toward it, hypostatic adjective hypostatically adverb