out.breed.ing

n.（名詞）
The breeding of distantly related or unrelated individuals, often producing a hybrid of superior quality.
遠交：遠親緣或非親緣交配，常產生較高質量的混種
Anthropology The mating of persons from different groups, often as a consequence of taboos against marriage within the group.
【人類學】 族外婚：分屬不同群體的人之間的婚姻，常由不準族內通婚的禁忌導致