We found 21 dictionaries that define the word deepening:

General (16 matching dictionaries)

1. deepening: Merriam-Webster
2. deepening: Collins English Dictionary
3. deepening: Vocabulary.com
4. Deepening, deepening: Wordnik
5. deepening: Cambridge Advanced Learner's Dictionary
6. deepening: Wiktionary
7. Deepening, deepening: Dictionary.com
8. deepening: Cambridge Essential American English Dictionary
9. The Deepening: Wikipedia, the Free Encyclopedia
10. Deepening: Online Plain Text English Dictionary
11. deepening: Rhymezone
12. Deepening: AllWords.com Multi-Lingual Dictionary
13. deepening: Webster's 1828 Dictionary
14. deepening: FreeDictionary.org
15. deepening: Mnemonic Dictionary
16. deepening: TheFreeDictionary.com

Business (1 matching dictionary)

17. deepening: Legal dictionary

Computing (1 matching dictionary)

18. deepening: Encyclopedia

Science (1 matching dictionary)

19. Weather Glossary (No longer online)

Tech (2 matching dictionaries)

20. Glossary of Meteorology (No longer online)
21. National Weather Service Glossary (No longer online)

(Note: See deepen as well.)

Definitions from Wiktionary (deepening) ▸ noun:  The act of becoming deeper. Similar: thickening, intensifying, gathering, broadening, darkening, dilation, upping, enlarging, strengthening, production, more... Opposite: shallowing, lessening, reducing, decreasing Types: emotional deepening, spiritual deepening, creative deepening, physical deepening, mental deepening, more... Phrases: capital deepening, iterative deepening, rapid deepening, explosive deepening, deepening pocket, more... Adjectives: financial, iterative, further, first, progressive, self, democratic, hermeneutical Colors:     indigo,     midnight blue,     deep purple,     forest green,     burgundy, more... ▸ Words similar to deepening ▸ Usage examples for deepening ▸ Idioms related to deepening ▸ Wikipedia articles (New!) ▸ Popular adjectives describing deepening ▸ Words that often appear near deepening ▸ Rhymes of deepening ▸ Invented words related to deepening