Definitions

from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. Increased vigor or other superior qualities arising from the crossbreeding of genetically different plants or animals. Also called heterosis.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. A property of some hybrids that are more likely to outperform either purebred parent in surviving.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. (genetics) the tendency of a crossbred organism to have qualities superior to those of either parent

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