heterosis

[het-uh-roh-sis]

het·er·o·sis

[het-uh-roh-sis]
noun Genetics.
the increase in growth, size, fecundity, function, yield, or other characters in hybrids over those of the parents.
Also called hybrid vigor.


Origin:
1910–15; < Late Greek hetérōsis an alteration. See hetero-, -sis
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Heterosis is always a great word to know.
So is quincunx. Does it mean:
an arrangement of five objects, as trees, in a square or rectangle, one at each corner and one in the middle.
a screen or mat covered with a dark material for shielding a camera lens from excess light or glare.
Collins
World English Dictionary
heterosis (ˌhɛtəˈrəʊsɪs)
 
n
biology another name for hybrid vigour
 
[C19: from Late Greek: alteration, from Greek heteroioun to alter, from heteros other, different]

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