hybrid vigour

noun 0.916

heterosis

noun 0.738

hybridism

noun 0.647

hybridization

noun 0.603

hybridity

noun 0.595

hybrid

noun 0.572

hybrid speciation

noun 0.556

vim and vigor

noun 0.553

overdominance

noun 0.541

nonhybrid

noun 0.529

crossbreeding

noun 0.525

cross-breeding

noun 0.521

cross-breed

noun 0.517

crossbred

noun 0.515

biohybrid

noun 0.514

prehybridization

noun 0.511

vigour

noun 0.511