| causal additivity | The relationship between two or more causal components such that their combined effect is the algebraic sum of their individual effects. (05 Mar 2000) |
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| additivity | The quality or state of being additive. (05 Mar 2000) |
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| causal | Pertaining to a cause, directed against a cause. (18 Nov 1997) |
| causal independence | The state of systems that share no causes or effects. (05 Mar 2000) |
| causal treatment | Treatment aimed at reversing the causal factor in a disease. (05 Mar 2000) |
| interlocal additivity | The relationship among quantitative effects of different genetic loci such that their joint effect is equal to the sum of their individual effects; an absence of epistasis or interaction. (05 Mar 2000) |
| intralocal additivity | The relationship between alleles such that the quantifiable phenotype of the heterozygote is at the midpoint between those for the two homozygotes; an absence of dominance. (05 Mar 2000) |