|—n , pl -ses|
|1.||metaphysics the essential nature of a substance as opposed to its attributes|
|a. any of the three persons of the Godhead, together constituting the Trinity|
|b. the one person of Christ in which the divine and human natures are united|
|3.||the accumulation of blood in an organ or part, under the influence of gravity as the result of poor circulation|
|4.||another name for epistasis|
|[C16: from Late Latin: substance, from Greek hupostasis foundation, from huphistasthai to stand under, from |
hypostasis hy·pos·ta·sis (hī-pŏs'tə-sĭs)
n. pl. hy·pos·ta·ses (-sēz')
A settling of solid particles in a fluid.
A condition in which the action of one gene conceals or suppresses the action of another gene that is not its allele but that affects the same part or biochemical process in an organism.