non·​ad·​di·​tive ˌnän-ˈa-də-tiv How to pronounce nonadditive (audio)
: not having a numerical value equal to the sum of values for the component parts
: of, relating to, or being a genetic effect that is not additive
nonadditive effects of epistasis
nonadditivity noun

Examples of nonadditive in a Sentence

Recent Examples on the Web But the trouble is, the twin data just aren't consistent with the idea that nonadditive effects explain any of these traits. Neuroskeptic, Discover Magazine, 9 Oct. 2013 This rule makes many simplifying assumptions, however, and does not accurately describe social evolution in organisms such as microbes where selection is both strong and nonadditive. Razib Khan, Discover Magazine, 1 July 2010

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'nonadditive.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History

First Known Use

1907, in the meaning defined at sense 1

Time Traveler
The first known use of nonadditive was in 1907

Dictionary Entries Near nonadditive

Cite this Entry

“Nonadditive.” Dictionary, Merriam-Webster, Accessed 14 Apr. 2024.

Medical Definition


non·​ad·​di·​tive (ˈ)nän-ˈad-ət-iv How to pronounce nonadditive (audio)
: of, relating to, or being a genetic effect that is not additive
nonadditivity noun
plural nonadditivities
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!