| Abbreviation | Term |
| antagonistic epistasis; diminishing returns epistasis genetics [...] epistasis is defined as antagonistic or diminishing returns when the effect of a mutation is weaker in the presence of other mutations than in their absence. See also: synergistic epistasis; reinforcing epistasis. papers: Wolf J. B. et al., 2000 | |
| asynthetic interaction genetics A, B, and the AB combination all have the same effect on the WT background [...]. papers: Drees B.L. et al., 2005 |