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epistasis

[ih-pis-tuh-sis] /ɪˈpɪs tə sɪs/
noun, plural epistases
[ih-pis-tuh-seez] /ɪˈpɪs təˌsiz/ (Show IPA)
1.
Genetics. a form of interaction between nonallelic genes in which one combination of such genes has a dominant effect over other combinations.
2.
Medicine/Medical.
  1. the stoppage of a secretion or discharge.
  2. a scum that forms on a urine specimen upon standing.
Origin
1915-1920
1915-20; < Greek epístasis stopping, stoppage. See epi-, stasis
Related forms
epistatic
[ep-uh-stat-ik] /ˌɛp əˈstæt ɪk/ (Show IPA),
adjective
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for epistases

epistasis

/ɪˈpɪstəsɪs/
noun
1.
(obsolete) scum on the surface of a liquid, esp on an old specimen of urine
2.
(med) the arrest or checking of a bodily discharge, esp bleeding
3.
(genetics) Also called hypostasis. the suppression by a gene of the effect of another gene that is not its allele
Derived Forms
epistatic (ˌɛpɪˈstætɪk) adjective
Word Origin
C19: from Greek: a stopping, from ephistanai to stop, from epi- + histanai to put
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for epistases
epistasis
from Gk. epistasis a stopping, stoppage, from epi upon + stasis a stopping or standing (see stasis).
Online Etymology Dictionary, © 2010 Douglas Harper
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epistases in Medicine

epistasis e·pis·ta·sis (ĭ-pĭs'tə-sĭs)
n. pl. e·pis·ta·ses (-sēz')

  1. A film that forms over the surface of a urine specimen.

  2. An interaction between nonallelic genes, especially an interaction in which one gene suppresses the expression of another.

  3. The suppression of a bodily discharge or secretion.


ep'i·stat'ic (ěp'ĭ-stāt'ĭk) adj.
The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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