We found 18 dictionaries that define the word mulling:

General (12 matching dictionaries)

1. mulling: Merriam-Webster
2. mulling: Collins English Dictionary
3. mulling: Vocabulary.com
4. Mulling, mulling: Wordnik
5. mulling: Cambridge Advanced Learner's Dictionary
6. mulling: Wiktionary
7. Mulling, mulling: Dictionary.com
8. Mulling: Online Plain Text English Dictionary
9. Mulling: Rhymezone
10. Mulling: AllWords.com Multi-Lingual Dictionary
11. mulling: FreeDictionary.org
12. mulling: TheFreeDictionary.com

Business (1 matching dictionary)

13. mulling: Legal dictionary

Computing (1 matching dictionary)

14. mulling: Encyclopedia

Medicine (3 matching dictionaries)

15. mulling: Merriam-Webster Medical Dictionary
16. online medical dictionary (No longer online)
17. mulling: Medical dictionary

Slang (1 matching dictionary)

18. Mulling: Urban Dictionary

(Note: See mull as well.)

Definitions from Wiktionary (mulling) ▸ noun:  The act of one who mulls or thinks over something. Similar: ruminate, mull over, meditate, contemplate, think over, chew over, ponder, speculate, muse, reflect, more... Phrases: Mulling spices, mulling over, mulling it over, more... Colors:     burgundy,     claret,     mulberry,     maroon,     wine, more... ▸ Words similar to mulling ▸ Usage examples for mulling ▸ Idioms related to mulling ▸ Wikipedia articles (New!) ▸ Popular adjectives describing mulling ▸ Words that often appear near mulling ▸ Rhymes of mulling ▸ Invented words related to mulling