Dictionary

hypostasis

noun hy·pos·ta·sis \hī-ˈpäs-tə-səs\
plural hy·pos·ta·ses\-ˌsēz\

Definition of HYPOSTASIS

1
a :  something that settles at the bottom of a fluid
b :  the settling of blood in the dependent parts of an organ or body
2
:  person 3
3
a :  the substance or essential nature of an individual
b :  something that is hypostatized
4
[New Latin, from Late Latin] :  failure of a gene to produce its usual effect when coupled with another gene that is epistatic toward it
hy·po·stat·ic \ˌhī-pə-ˈsta-tik\ adjective
hy·po·stat·i·cal·ly \-ti-k(ə-)lē\ adverb

Origin of HYPOSTASIS

Late Latin, substance, sediment, from Greek, support, foundation, substance, sediment, from hyphistasthai to stand under, support, from hypo- + histasthai to be standing — more at stand
First Known Use: 1590

hypostasis

noun hy·pos·ta·sis \hī-ˈpäs-tə-səs\   (Medical Dictionary)
plural hy·pos·ta·ses \-ˌsēz\

Medical Definition of HYPOSTASIS

1
:  the settling of blood in relatively lower parts of an organ or the body due to impaired or absent circulation <the face was discolored by postmortem hypostasis>
2
:  failure of a gene to produce its usual effect when coupled with another gene that is epistatic toward it

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