noun, plural e·pis·ta·ses [ih-pis-tuh-seez] /ɪˈpɪs təˌsiz/.
- Genetics. a form of interaction between nonallelic genes in which one combination of such genes has a dominant effect over other combinations.
- the stoppage of a secretion or discharge.
- a scum that forms on a urine specimen upon standing.
- obsolete scum on the surface of a liquid, esp on an old specimen of urine
- med the arrest or checking of a bodily discharge, esp bleeding
- Also called: hypostasis genetics the suppression by a gene of the effect of another gene that is not its allele
n. pl. e•pis•ta•ses (-sēz′)
- A film that forms over the surface of a urine specimen.
- An interaction between nonallelic genes, especially an interaction in which one gene suppresses the expression of another.
- The suppression of a bodily discharge or secretion.