We found 23 dictionaries that define the word heterosis:

General (17 matching dictionaries)

1. heterosis: Merriam-Webster
2. heterosis: Oxford Learner's Dictionaries
3. heterosis: American Heritage Dictionary of the English Language
4. heterosis: Collins English Dictionary
5. heterosis: Vocabulary.com
6. heterosis: Wordnik
7. heterosis: Wiktionary
8. heterosis: Webster's New World College Dictionary, 4th Ed.
9. heterosis: Infoplease Dictionary
10. heterosis: Dictionary.com
11. Heterosis: Wikipedia, the Free Encyclopedia
12. Heterosis: Online Plain Text English Dictionary
13. heterosis: Webster's Revised Unabridged, 1913 Edition
14. Heterosis: AllWords.com Multi-Lingual Dictionary
15. heterosis: FreeDictionary.org
16. heterosis: Mnemonic Dictionary
17. heterosis: TheFreeDictionary.com

Computing (1 matching dictionary)

18. heterosis: Encyclopedia

Medicine (4 matching dictionaries)

19. heterosis: Merriam-Webster Medical Dictionary
20. Dorland's Illustrated Medical Dictionary (No longer online)
21. online medical dictionary (No longer online)
22. heterosis: Medical dictionary

Science (1 matching dictionary)

23. Agricultural Thesaurus and Glossary (No longer online)

(Note: See heterotic as well.)

Definitions from Wiktionary (heterosis) ▸ noun:  (genetics) The tendency of cross-breeding to produce an animal or plant with a greater hardiness than its parents; hybrid vigour. Similar: heterobeltiosis, hybrid vigor, hybrid, heterozygosis, heteroploidy, hybridization, heterogenesis, hybridogenesis, heterozygosity, dehybridization, more... Opposite: inbreeding, depression, loss of vigor, degeneration Types: overdominance, dominance, epistasis, canopy effect, hybrid vigor, more... Adjectives: negative, significant, positive, high, parent, average, maximum, standard, maternal, greater, considerable ▸ Words similar to heterosis ▸ Usage examples for heterosis ▸ Idioms related to heterosis ▸ Wikipedia articles (New!) ▸ Popular adjectives describing heterosis ▸ Words that often appear near heterosis ▸ Rhymes of heterosis ▸ Invented words related to heterosis