nonadditiveadj.

1907 Philos. Rev. 16 646 The assumption that energies in coexistence in a system act only additively..is contrary to the well-known and frequently found non-additive results.

1926 Science 5 Nov. 433/2 [They] maintain that the unique qualitative character of organic wholes is due to the peculiar non-additive relations or interactions among their parts.

1944 Proc. Royal Soc. B. 132 308 They were also non-additive in action, in a way commonly shown by polygenic combinations.

1946 Math. Rev. 7 11/2 (title) Properties of nonadditive functions of intervals and their application to the theory of the integral.

1964 R. H. Robins Gen. Linguistics v. 211 These non-additive variations in word form are exceptional.., belonging mainly to classes of words that exhibit additive paradigm variations like boy, boys, bake, baked.

1990 New Eng. Jrnl. Med. 24 May 1484/1 Nonadditive effects result from interactions between alleles at a locus (dominance) or among genes at different loci (epistasis).

2000 Jrnl. Polit. Econ. 108 528 Nonadditive models of uncertainty aversion..cannot be estimated using our procedure.