epistasis

noun
epis·​ta·​sis | \i-ˈpi-stə-səs \
plural epistases\ i-​ˈpi-​stə-​ˌsēz \

Definition of epistasis 

: suppression of the effect of a gene by a nonallelic gene

Other Words from epistasis

epistatic \ ˌe-​pə-​ˈsta-​tik \ adjective

First Known Use of epistasis

circa 1917, in the meaning defined above

History and Etymology for epistasis

New Latin, from Greek, act of stopping, from ephistanai to stop, from epi- + histanai to cause to stand — more at stand

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The first known use of epistasis was circa 1917

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More Definitions for epistasis

epistasis

noun
epis·​ta·​sis | \i-ˈpis-tə-səs \
plural epistases\ -​ˌsēz \

Medical Definition of epistasis 

1a : suppression of a secretion or discharge

b : a scum on the surface of urine

2 : suppression of the effect of a gene by a nonallelic gene the role of epistasis in polygenic inheritance

More from Merriam-Webster on epistasis

Britannica.com: Encyclopedia article about epistasis

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