- the increase in growth, size, fecundity, function, yield, or other characters in hybrids over those of the parents.
Origin of heterosis
Also called hybrid vigor.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
- biology another name for hybrid vigour
C19: from Late Greek: alteration, from Greek heteroioun to alter, from heteros other, different