Wiktionary
hybrid vigor
alt. A property of some hybrids that are more likely to outperform either purebred parent in surviving. n. A property of some hybrids that are more likely to outperform either purebred parent in surviving.
Usage examples of "hybrid vigor".
Where the hybrid vigor comes in is, the one with both of the bad traits can't compete.
Durius said hybrid vigor was the order of the day, and Rydell guessed he was right.