from The American Heritage® Dictionary of the English Language, 4th Edition
- transitive v. To cross (animals or plants) by breeding individuals of different strains but usually of the same breed.
- n. The process of outcrossing.
- n. Offspring produced by outcrossing.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. a plant or animal produced by outcrossing
- v. to crossbreed different strains of a plant of animal
from The Century Dictionary and Cyclopedia
- n. An organism born to parents who belong to different families, varieties, races, or tribes.
To start with, despite what one frequently sees in advertisements, "outcross" is not a synonym for "good cross."
With an outcross to Criminal Minds or The Wire, as it features an ensemble cast.
Plants adapted to outcross or cross-pollinise have taller stamens than carpels to better spread pollen to other flowers.
But by the 1970s breeders began to outcross heavily to achieve a more refined look for the show ring.
And the breed is a complete outcross to the Holstein, optimising hybrid vigour.
He is a complete outcross, with a blend of Chilean,
Ironically, Siphon himself is not an outcross, having the close relatives Irish Song (BRZ) and Eridan 3 x 3 in his pedigree.
The international outcross did frequently provide some hybrid vigor - useful for covering up recessive negatives - in the short-term, but would have proved a disaster in the long-term as its principal achievement would have been to dilute valuable gene groupings that are better maintained by prudent inbreeding and line-breeding (as great breeders through the ages have demonstrated consistently).
Of course, the international outcross turned out to be a false grail.
Siphon was as good an example as you might want to find of the sort of problem an international outcross stallion can present.