Heterosis meaning

hĕt'ə-rō'sĭs
A phenomenon resulting from hybridization, in which offspring display greater vigor, size, resistance, etc. than the parents.
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(genetics) The tendency of cross-breeding to produce an animal or plant with a greater hardiness than its parents; hybrid vigour.
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Origin of heterosis

  • Late Greek heterōsis alteration alteration of Greek heteroiōsis from heteroioun to alter from heteroios different in kind from heteros other hetero–
    From American Heritage Dictionary of the English Language, 5th Edition
  • From hetero- +‎ -osis
    From Wiktionary