out·breed·ing 'au̇t-.brēd-iŋ n the interbreeding of individuals or stocks that are relatively unrelated compare INBREEDING, LINEBREEDING
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n.
the production of offspring by parents who are not closely related. Compare inbreeding.
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out·breed·ing (outґbrēd-ing) the breeding of genetically unrelated plants or animals; called also crossbreeding.Medical dictionary. 2011.