Definition of interbreed in US English:



  • 1no object (with reference to an animal) breed or cause to breed with another of a different race or species.

    ‘wolves and dogs can interbreed’
    • ‘This helps explain why the success of hybrids is so variable and also why some species can, and others cannot, interbreed.’
    • ‘It is part of a complex of closely related gull species that interbreed readily.’
    • ‘Because they are free to interbreed, the wild stock is of more or less mixed origin.’
    • ‘Although the territories of populations overlap, they do not interbreed.’
    • ‘When the three species come into contact, they defend territories from one another and do not interbreed.’
    • ‘The rats offer several advantages to researchers: the rodents are a distinct species from later European stowaways, and therefore did not interbreed.’
    • ‘There are 54 to 58 species of Motacillidae, some of which interbreed.’
    • ‘Farmed fish regularly and in increasing numbers escape into the wild where they interbreed, spread diseases to native species and dilute the natural gene pool.’
    • ‘Organisms from distinct but closely related species may be able to interbreed.’
    • ‘These races can interbreed but they never produce halfbreeds.’
    • ‘He says pet rabbits have a habit of digging their way to freedom, especially if kept outside in a garden, and that they often interbreed with native populations.’
    • ‘These wild oxen appear to have made no detectable contribution to the domestic gene pool; they did not interbreed with their domestic contemporaries.’
    • ‘Non-indigenous rainbow interbreeds and competes with native species, and brown trout are threatened as a result.’
    • ‘He said that two organisms belonged to the same species if they are able to interbreed and produce fertile offspring.’
    • ‘The populations in the various parts of the world ocean are all genetically separate subspecies and, while they may co-mingle in breeding grounds, they rarely if ever interbreed.’
    • ‘With closely related animals that can interbreed, it's not unusual for the dominant species to absorb the other, Trinkaus says.’
    • ‘If both types inhabit the same place in the field, they usually interbreed.’
    • ‘As a result, the fly provides the first evidence that two different animal species can interbreed and evolve into a new, distinct animal if their hybrid moves to a new habitat, the study suggests.’
    • ‘If this process goes on long enough, parent and daughter species can no longer interbreed, and there results a new species.’
    • ‘The biological definition of a species states that if two races interbreed they belong in the same species.’
    composite, cross-bred, interbred
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    1. 1.1no object (of an animal) inbreed.
      ‘their energy and physique had been sapped by interbreeding’
      • ‘The human race and their technologically able allies moved forth into the galaxy and dispersed, creating new worlds, and through interbreeding, new subspecies of races.’
      • ‘These differences in color are sufficient to prevent interbreeding among existing species.’
      • ‘Wild Atlantic salmon stocks will be wiped out within decades because of interbreeding with escaped farmed stocks, leading scientists have warned.’
      • ‘Since their arrival in Africa, Indian cattle genes have thrived and through interbreeding, have spread throughout the continent.’
      • ‘But taxonomists rarely actually test interbreeding with live animals or plants to see if they could actually produce healthy, fertile offspring.’
      • ‘New scientific information from the U.S. Fish and Wildlife Service suggests the spotted owl is not entirely dependent on old-growth forest for habitat and faces a significant threat from interbreeding with the barred owl.’
      • ‘Theories have ranged from interspecies genocide to interbreeding to humans' superior communication skills, hunting technology, and social organization.’
      • ‘These markers will be used to estimate interbreeding between field populations of the two developmental morphs to assess whether there is any evidence of speciation.’
      • ‘Reproductive isolation - not interbreeding with either of the parent species - is one requirement for a species.’
      • ‘The Government agreed to wipe out the UK's ruddy duck population after it was found the north American duck was challenging the survival of the globally-threatened white-headed duck through interbreeding.’
      • ‘And though there are no discernible physical barriers to prevent intermingling or interbreeding, I have never seen mixed herds or any individual that looks like an intermediate form, or hybrid.’
      • ‘Alan Templeton, a geneticist at Washington University in St. Louis who headed the study reported in Nature, has concluded that yes, there was interbreeding between the different groups.’
      • ‘Genetic barriers to interbreeding in closely related birds are few, and fertile hybrid crosses are known between members of different genera that have presumably been separate for millions of years.’
      hybrid, half-caste, half-breed, cross-breed, cross-bred, interbred, mongrel, impure
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