Heterosis definition

hetərōsis
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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Other Word Forms

Noun

Singular:
heterosis
Plural:
heteroses

Origin of heterosis

  • From hetero- +‎ -osis

    From Wiktionary