We found 21 dictionaries that define the word growing season:

General (14 matching dictionaries)

1. growing season: Merriam-Webster
2. growing season: Oxford Learner's Dictionaries
3. growing season: Collins English Dictionary
4. growing season: Vocabulary.com
5. growing-season: Wordnik
6. growing season: Wiktionary
7. growing season: Dictionary.com
8. Growing season (vine), Growing season (wine), Growing season: Wikipedia, the Free Encyclopedia
9. growing season: Rhymezone
10. growing season: FreeDictionary.org
11. growing season: Mnemonic Dictionary
12. growing season: TheFreeDictionary.com

Computing (1 matching dictionary)

13. growing season: Encyclopedia

Science (2 matching dictionaries)

14. Agricultural Thesaurus and Glossary (No longer online)
15. Weather Glossary (No longer online)

Tech (4 matching dictionaries)

16. Glossary of Meteorology (No longer online)
17. Glossary of Agricultural Terms, Programs and Laws (No longer online)
18. Lake and Water Word Glossary (No longer online)
19. National Weather Service Glossary (No longer online)

(Note: See growing_seasons as well.)

Definitions from Wiktionary (growing season) ▸ noun:  the part of a year when weather conditions and temperatures are favourable for the growth of plants and trees. Similar: green-up, mast year, spring growth, summer pruning, grass, crop, greenwood, rice growing, spring, herbage, more... Opposite: dormant season, non-growing season, off-season ▸ Words similar to growing season ▸ Usage examples for growing season ▸ Idioms related to growing season ▸ Wikipedia articles (New!) ▸ Words that often appear near growing season ▸ Rhymes of growing season ▸ Invented words related to growing season