out·​breed·​ing ˈau̇t-ˌbrē-diŋ How to pronounce outbreeding (audio)
: the interbreeding of individuals or stocks that are relatively unrelated : outcrossing

Examples of outbreeding in a Sentence

Recent Examples on the Web How is optimal outbreeding achieved? Seriously Science, Discover Magazine, 18 May 2017 Generations of inbreeding, resulting in near pedigree collapse, can be abolished by one generation of outbreeding! Razib Khan, Discover Magazine, 18 July 2013 Assuming that an individual with many long ROH can survive and reproduce over time these massive swaths of homogeneity will be wiped away by mutation and recombination as well as outbreeding. Razib Khan, Discover Magazine, 17 Nov. 2010 The paper above posits the inverse effect, where outbreeding results in greater outcomes than are to be expected based on the mid-parent trait value. Razib Khan, Discover Magazine, 7 July 2011

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'outbreeding.' 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

1901, in the meaning defined above

Time Traveler
The first known use of outbreeding was in 1901

Dictionary Entries Near outbreeding

Cite this Entry

“Outbreeding.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/outbreeding. Accessed 18 Apr. 2024.

Kids Definition


out·​breed·​ing -ˌbrēd-iŋ How to pronounce outbreeding (audio)
: the interbreeding of individuals that are unrelated or only distantly related

Medical Definition


out·​breed·​ing ˈau̇t-ˌbrēd-iŋ How to pronounce outbreeding (audio)
: the interbreeding of individuals or stocks that are relatively unrelated compare inbreeding, linebreeding

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