Definition of outcross in English:



  • Breed (an animal or plant) with one not closely related.

    • ‘This strain was then outcrossed six times to wild-type worms.’
    • ‘However, in all other cases, inbred lines have to be produced before outcrossing them.’
    • ‘The 10 resistant mutants were outcrossed twice to wild type.’
    • ‘No affected kittens were born from outcrossing parents of an affected animal with normal unrelated cats.’
    • ‘To rule out the possibility that the allelic difference was caused by the genetic background, we outcrossed the chic-carrying chromosome with a multiply marked chromosome and replaced 60% of the chic chromosome.’


  • An animal or plant produced as the result of outcrossing.

    • ‘To ensure that observed chromosome pairing was generally indicative of the species and that there was no difference between selfing and outcrossing, 11 self-crosses and 2 outcrosses were observed.’
    • ‘These outcrosses were chosen to produce as many colors and patterns as possible, including the colorpoint pattern of the Siamese.’
    • ‘While the warmbloods of France, Germany, Sweden, Poland, Hungary and other European countries have produced a number of good individuals, their pedigrees are riddled with recent Thoroughbred, Arabian and other outcrosses.’
    • ‘Some outcrosses are excellent, while others are not.’
    • ‘The outcrosses in each plot were removed and then plants were thinned to approximately 6.5 plants/m.’
    • ‘Eventually, the approved outcrosses for Scottish folds were limited to British and American shorthairs.’