out·​cross·​ing ˈau̇t-ˌkrȯ-siŋ How to pronounce outcrossing (audio)
: the interbreeding of individuals or stocks that are relatively unrelated (as to improve expression of a desired genetic trait) : outbreeding

Word History

First Known Use

1890, in the meaning defined above

Time Traveler
The first known use of outcrossing was in 1890

Dictionary Entries Near outcrossing

Cite this Entry

“Outcrossing.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/outcrossing. Accessed 7 Dec. 2023.

Medical Definition


: a mating of individuals of different strains but usually of the same breed
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